Update to normalize.css 4.1.1. Fixes #55

33 files changed, 3652 insertions, 4292 deletions

diff --git a/test/fixtures/fork-versions/default/output.css b/test/fixtures/fork-versions/default/output.css
index 4cc55e0..4aa06f1 100644
--- a/test/fixtures/fork-versions/default/output.css
+++ b/test/fixtures/fork-versions/default/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
- * 1. Set default font family to sans-serif.
- * 2. Prevent iOS and IE text size adjust after device orientation change,
- *    without disabling user zoom.
+ * 1. Change the default font family in all browsers (opinionated).
+ * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
  */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
- * Remove default margin.
+ * Remove the margin in all browsers (opinionated).
  */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
    ========================================================================== */
 /**
- * Correct `block` display not defined for any HTML5 element in IE 8/9.
- * Correct `block` display not defined for `details` or `summary` in IE 10/11
- * and Firefox.
- * Correct `block` display not defined for `main` in IE 11.
+ * Add the correct display in IE <10.
+ * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+ * Add the correct display in IE for `main`.
  */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,105 @@ summary {
   display: block; }
 
 /**
- * 1. Correct `inline-block` display not defined in IE 8/9.
- * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+ * Add the correct display in IE <10.
  */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
- * Prevent modern browsers from displaying `audio` without controls.
- * Remove excess height in iOS 5 devices.
+ * Add the correct display and remove excess height in iOS 4-7.
  */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-   * Address `[hidden]` styling not present in IE 8/9/10.
-   */
-[hidden] {
-  display: none; }
+ * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+ */
+progress {
+  vertical-align: baseline; }
 
 /**
- * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+ * Add the correct display in IE <11, Safari <8, and Firefox <22.
+ * 1. Add the correct display in IE.
  */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
    ========================================================================== */
 /**
-   * Remove the gray background color from active links in IE 10.
-   */
+ * 1. Remove the gray background on active links in IE 10.
+ * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+ */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
- * Improve readability of focused elements when they are also in an
- * active/hover state.
+ * Remove the outline on focused links when they are also active or hovered
+ * in all browsers (opinionated).
  */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
    ========================================================================== */
 /**
- * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+ * 1. Remove the bottom border in Firefox <40.
+ * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
  */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
- * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+ * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
  */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+ * Add the correct font weight in Chrome, Edge, and Safari.
+ */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+pre,
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  /* 1 */
+  font-size: 1em;
+  /* 2 */ }
 
 /**
- * Address styling not present in Safari and Chrome.
+ * Add the correct font style in Android <4.4.
  */
 dfn {
   font-style: italic; }
 
 /**
- * Address variable `h1` font-size and margin within `section` and `article`
- * contexts in Firefox 4+, Safari, and Chrome.
+ * Correct the font size and margin on `h1` elements within `section` and
+ * `article` contexts in Chrome, Firefox, and Safari.
  */
 h1 {
   font-size: 2em;
@@ -121,20 +145,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-   * Address styling not present in IE 8/9.
-   */
+ * Add the correct background and color in IE <10.
+ */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
- * Address inconsistent and variable font size in all browsers.
+ * Add the correct font size in all browsers.
  */
 small {
   font-size: 80%; }
 
 /**
- * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+ * Prevent `sub` and `sup` elements from affecting the line height in
+ * all browsers.
  */
 sub,
 sup {
@@ -143,22 +168,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
    ========================================================================== */
 /**
-   * Remove border when inside `a` element in IE 8/9/10.
-   */
+ * Remove the border on images inside links in IE <11.
+ */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
- * Correct overflow not hidden in IE 9/10/11.
+ * Hide the overflow in IE.
  */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,160 +191,166 @@ svg:not(:root) {
 /* Grouping content
    ========================================================================== */
 /**
-   * Address margin not present in IE 8/9 and Safari.
-   */
+ * Add the correct margin in IE 8.
+ */
 figure {
   margin: 1.5em 40px; }
 
 /**
- * Address differences between Firefox and other browsers.
+ * 1. Add the correct box sizing in Firefox.
+ * 2. Show the overflow in Edge and IE.
  */
 hr {
   box-sizing: content-box;
-  height: 0; }
-
-/**
- * Contain overflow in all browsers.
- */
-pre {
-  overflow: auto; }
-
-/**
- * Address odd `em`-unit font size rendering in all browsers.
- */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /* Forms
    ========================================================================== */
 /**
- * Known limitation: by default, Chrome and Safari on OS X allow very limited
- * styling of `select`, unless a `border` property is set.
- */
-/**
- * 1. Correct color not being inherited.
- *    Known issue: affects color of disabled elements.
- * 2. Correct font properties not being inherited.
- * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
- * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
- * 5. Improve appearance and consistency with IE 6/7.
+ * Known issues:
+ * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+ *   select, unless a border property is set. The default font weight on
+ *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+ *   OS X.
+ * - It is recommended that you do not style checkbox and radio inputs as
+ *   Firefox's implementation does not respect box-sizing, padding, or width.
+ * - Certain font size values applied to number inputs cause the cursor style of
+ *   the decrement button to change from default to text.
+ * - The search input is not fully stylable by default. In Chrome and Safari on
+ *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+ *   and Safari on Windows you can't control border properly. It will apply
+ *   border-width but will only show a border color (which cannot be controlled)
+ *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+ *   addresses these issues without removing the benefits of search inputs (e.g.
+ *   showing past searches). Safari (but not Chrome) will clip the cancel button
+ *   on when it has padding (and textfield appearance).
+ */
+/**
+ * 1. Change font properties to `inherit` in all browsers (opinionated).
+ * 2. Remove the margin in Firefox and Safari.
+ * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+ * 4. Improve appearance and consistency with IE 6/7.
  */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
- * Address `overflow` set to `hidden` in IE 8/9/10/11.
+ * Show the overflow in IE.
  */
 button {
   overflow: visible; }
 
 /**
- * Address inconsistent `text-transform` inheritance for `button` and `select`.
- * All other form control elements do not inherit `text-transform` values.
- * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
- * Correct `select` style inheritance in Firefox.
+ * Remove the inheritance of text transform in Edge, Firefox, and IE.
+ * 1. Remove the inheritance of text transform in Firefox.
  */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
- * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
- *    and `video` controls.
- * 2. Correct inability to style clickable `input` types in iOS.
- * 3. Improve usability and consistency of cursor style between image-type
- *    `input` and others.
- * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
- *    Known issue: inner spacing remains in IE 6.
+ * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+ *    controls in Android 4.
+ * 2. Correct the inability to style clickable types in iOS and Safari.
  */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
- * Re-set default cursor for disabled elements.
+ * Remove the inner border and padding in Firefox.
  */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
- * Remove inner padding and border in Firefox 4+.
+ * Restore the focus styles unset by the previous rule.
  */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
- * Address Firefox 4+ setting `line-height` on `input` using `!important` in
- * the UA stylesheet.
+ * Show the overflow in Edge.
  */
 input {
-  line-height: normal; }
-
-/**
-   * It's recommended that you don't attempt to style these elements.
-   * Firefox's implementation doesn't respect box-sizing, padding, or width.
-   *
-   * 1. Address box sizing set to `content-box` in IE 8/9/10.
-   * 2. Remove excess padding in IE 8/9/10.
-   * 3. Remove excess padding in IE 7.
-   *    Known issue: excess padding remains in IE 6.
-   */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+ * 1. Add the correct box sizing in IE <11.
+ * 2. Remove the padding in IE <11.
+ * 3. Remove excess padding in IE 7.
+ *    Known issue: excess padding remains in IE 6.
+ */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
- * Fix the cursor style for Chrome's increment/decrement buttons. For certain
- * `font-size` values of the `input`, it causes the cursor style of the
- * decrement button to change from `default` to `text`.
+ * Correct the cursor style of increment and decrement buttons in Chrome.
  */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
- * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
- * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+ * 1. Correct the odd appearance in Chrome and Safari.
+ * 2. Correct the outline style in Safari.
  */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-   * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-   * Safari (but not Chrome) clips the cancel button when the search input has
-   * padding (and `textfield` appearance).
+   * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
    */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
- * Define consistent border, margin, and padding.
+ * Correct the text style of placeholders in Chrome, Edge, and Safari.
+ */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+ * 1. Correct the inability to style clickable types in iOS and Safari.
+ * 2. Change font properties to `inherit` in Safari.
+ */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+ * Change the border, margin, and padding in all browsers (opinionated).
  */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -327,38 +358,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
- * 1. Correct `color` not being inherited in IE 8/9/10/11.
- * 2. Remove padding so people aren't caught out if they zero out fieldsets.
- * 3. Correct alignment displayed oddly in IE 6/7.
+ * 1. Correct the text wrapping in Edge and IE.
+ * 2. Correct the color inheritance from `fieldset` elements in IE.
+ * 3. Remove the padding so developers are not caught out when they zero out
+ *    `fieldset` elements in all browsers.
+ * 4. Correct alignment displayed oddly in IE 6/7.
  */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
   /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
- * Remove default vertical scrollbar in IE 8/9/10/11.
- */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
- * Don't inherit the `font-weight` (applied by a rule above).
- * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+ * Restore the font weight unset by a previous rule.
  */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-   ========================================================================== */
 /**
- * Remove most spacing between table cells.
+ * Remove the default vertical scrollbar in IE.
  */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/fork-versions/ruby-sass-compass/output.css b/test/fixtures/fork-versions/ruby-sass-compass/output.css
index b3af703..2530f56 100644
--- a/test/fixtures/fork-versions/ruby-sass-compass/output.css
+++ b/test/fixtures/fork-versions/ruby-sass-compass/output.css
@@ -9,9 +9,8 @@ html {
   line-height: 1.5em; }
 
 /**
- * 1. Set default font family to sans-serif.
- * 2. Prevent iOS and IE text size adjust after device orientation change,
- *    without disabling user zoom.
+ * 1. Change the default font family in all browsers (opinionated).
+ * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
  */
 html {
   font-family: sans-serif;
@@ -22,7 +21,7 @@ html {
   /* 2 */ }
 
 /**
- * Remove default margin.
+ * Remove the margin in all browsers (opinionated).
  */
 body {
   margin: 0; }
@@ -30,10 +29,9 @@ body {
 /* HTML5 display definitions
    ========================================================================== */
 /**
- * Correct `block` display not defined for any HTML5 element in IE 8/9.
- * Correct `block` display not defined for `details` or `summary` in IE 10/11
- * and Firefox.
- * Correct `block` display not defined for `main` in IE 11.
+ * Add the correct display in IE <10.
+ * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+ * Add the correct display in IE for `main`.
  */
 article,
 aside,
@@ -42,7 +40,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -51,86 +48,107 @@ summary {
   display: block; }
 
 /**
- * 1. Correct `inline-block` display not defined in IE 8/9.
- * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+ * Add the correct display in IE <10.
  */
 audio,
 canvas,
 progress,
 video {
   display: inline-block;
-  /* 1 */
   *display: inline;
-  *zoom: 1;
-  vertical-align: baseline;
-  /* 2 */ }
+  *zoom: 1; }
 
 /**
- * Prevent modern browsers from displaying `audio` without controls.
- * Remove excess height in iOS 5 devices.
+ * Add the correct display and remove excess height in iOS 4-7.
  */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-   * Address `[hidden]` styling not present in IE 8/9/10.
-   */
-[hidden] {
-  display: none; }
+ * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+ */
+progress {
+  vertical-align: baseline; }
 
 /**
- * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+ * Add the correct display in IE <11, Safari <8, and Firefox <22.
+ * 1. Add the correct display in IE.
  */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
    ========================================================================== */
 /**
-   * Remove the gray background color from active links in IE 10.
-   */
+ * 1. Remove the gray background on active links in IE 10.
+ * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+ */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
- * Improve readability of focused elements when they are also in an
- * active/hover state.
+ * Remove the outline on focused links when they are also active or hovered
+ * in all browsers (opinionated).
  */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
    ========================================================================== */
 /**
- * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+ * 1. Remove the bottom border in Firefox <40.
+ * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
  */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
- * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+ * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
  */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
 
 /**
-   * Set 1 unit of vertical rhythm on the top and bottom margin.
-   */
-blockquote {
-  margin: 1.5em 40px; }
+ * Add the correct font weight in Chrome, Edge, and Safari.
+ */
+b,
+strong {
+  font-weight: bolder; }
 
 /**
- * Address styling not present in Safari and Chrome.
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+pre,
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  /* 1 */
+  font-size: 1em;
+  /* 2 */ }
+
+/**
+ * Add the correct font style in Android <4.4.
  */
 dfn {
   font-style: italic; }
 
 /**
- * Address variable `h1` font-size and margin within `section` and `article`
- * contexts in Firefox 4+, Safari, and Chrome.
+ * Correct the font size and margin on `h1` elements within `section` and
+ * `article` contexts in Chrome, Firefox, and Safari.
  */
 h1 {
   /* Set the font-size and line-height while keeping a proper vertical rhythm. */
@@ -171,27 +189,21 @@ h6 {
   margin-bottom: 2.23881em; }
 
 /**
-   * Address styling not present in IE 8/9.
-   */
+ * Add the correct background and color in IE <10.
+ */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-   * Set 1 unit of vertical rhythm on the top and bottom margin.
-   */
-p,
-pre {
-  margin: 1.5em 0; }
-
-/**
- * Address inconsistent and variable font size in all browsers.
+ * Add the correct font size in all browsers.
  */
 small {
   font-size: 80%; }
 
 /**
- * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+ * Prevent `sub` and `sup` elements from affecting the line height in
+ * all browsers.
  */
 sub,
 sup {
@@ -200,14 +212,36 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
+sub {
+  bottom: -0.25em; }
+
 sup {
   top: -0.5em; }
 
-sub {
-  bottom: -0.25em; }
+/* Embedded content
+   ========================================================================== */
+/**
+ * Remove the border on images inside links in IE <11.
+ */
+img {
+  border-style: none;
+  /* Improve image quality when scaled in IE 7. */
+  -ms-interpolation-mode: bicubic; }
+
+/**
+ * Hide the overflow in IE.
+ */
+svg:not(:root) {
+  overflow: hidden; }
+
+/* Grouping content
+   ========================================================================== */
+/**
+   * Set 1 unit of vertical rhythm on the top and bottom margin.
+   */
+blockquote {
+  margin: 1.5em 40px; }
 
-/* Lists
-     ========================================================================== */
 /**
    * Address margins set differently in IE 6/7.
    */
@@ -236,60 +270,53 @@ nav ol {
   list-style: none;
   list-style-image: none; }
 
-/* Embedded content
-   ========================================================================== */
 /**
-   * Remove border when inside `a` element in IE 8/9/10.
-   */
-img {
-  border: 0;
-  /* Improve image quality when scaled in IE 7. */
-  -ms-interpolation-mode: bicubic; }
-
-/**
- * Correct overflow not hidden in IE 9/10/11.
+ * Add the correct margin in IE 8.
  */
-svg:not(:root) {
-  overflow: hidden; }
-
-/* Grouping content
-   ========================================================================== */
-/**
-   * Address margin not present in IE 8/9 and Safari.
-   */
 figure {
   margin: 1.5em 40px; }
 
 /**
- * Address differences between Firefox and other browsers.
+ * 1. Add the correct box sizing in Firefox.
+ * 2. Show the overflow in Edge and IE.
  */
 hr {
   -moz-box-sizing: content-box;
   -webkit-box-sizing: content-box;
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /**
- * Contain overflow in all browsers.
- */
+   * Set 1 unit of vertical rhythm on the top and bottom margin.
+   */
+p,
 pre {
-  overflow: auto; }
-
-/**
- * Address odd `em`-unit font size rendering in all browsers.
- */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
+  margin: 1.5em 0; }
 
 /* Forms
    ========================================================================== */
 /**
- * Known limitation: by default, Chrome and Safari on OS X allow very limited
- * styling of `select`, unless a `border` property is set.
+ * Known issues:
+ * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+ *   select, unless a border property is set. The default font weight on
+ *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+ *   OS X.
+ * - It is recommended that you do not style checkbox and radio inputs as
+ *   Firefox's implementation does not respect box-sizing, padding, or width.
+ * - Certain font size values applied to number inputs cause the cursor style of
+ *   the decrement button to change from default to text.
+ * - The search input is not fully stylable by default. In Chrome and Safari on
+ *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+ *   and Safari on Windows you can't control border properly. It will apply
+ *   border-width but will only show a border color (which cannot be controlled)
+ *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+ *   addresses these issues without removing the benefits of search inputs (e.g.
+ *   showing past searches). Safari (but not Chrome) will clip the cancel button
+ *   on when it has padding (and textfield appearance).
  */
 /**
    * Correct margin displayed oddly in IE 6/7.
@@ -298,98 +325,86 @@ form {
   margin: 0; }
 
 /**
- * 1. Correct color not being inherited.
- *    Known issue: affects color of disabled elements.
- * 2. Correct font properties not being inherited.
- * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
- * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
- * 5. Improve appearance and consistency with IE 6/7.
+ * 1. Change font properties to `inherit` in all browsers (opinionated).
+ * 2. Remove the margin in Firefox and Safari.
+ * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+ * 4. Improve appearance and consistency with IE 6/7.
  */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */
+  /* 2 */
   *font-family: sans-serif;
-  /* 4 */
+  /* 3 */
   *vertical-align: middle;
-  /* 5 */ }
+  /* 4 */ }
 
 /**
- * Address `overflow` set to `hidden` in IE 8/9/10/11.
+ * Show the overflow in IE.
  */
 button {
   overflow: visible; }
 
 /**
- * Address inconsistent `text-transform` inheritance for `button` and `select`.
- * All other form control elements do not inherit `text-transform` values.
- * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
- * Correct `select` style inheritance in Firefox.
+ * Remove the inheritance of text transform in Edge, Firefox, and IE.
+ * 1. Remove the inheritance of text transform in Firefox.
  */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
- * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
- *    and `video` controls.
- * 2. Correct inability to style clickable `input` types in iOS.
- * 3. Improve usability and consistency of cursor style between image-type
- *    `input` and others.
- * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
- *    Known issue: inner spacing remains in IE 6.
+ * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+ *    controls in Android 4.
+ * 2. Correct the inability to style clickable types in iOS and Safari.
  */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */
-  *overflow: visible;
-  /* 4 */ }
+  /* 2 */ }
 
 /**
- * Re-set default cursor for disabled elements.
+ * Remove the inner border and padding in Firefox.
  */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
- * Remove inner padding and border in Firefox 4+.
+ * Restore the focus styles unset by the previous rule.
  */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
- * Address Firefox 4+ setting `line-height` on `input` using `!important` in
- * the UA stylesheet.
+ * Show the overflow in Edge.
  */
 input {
+  overflow: visible;
   line-height: normal; }
 
 /**
-   * It's recommended that you don't attempt to style these elements.
-   * Firefox's implementation doesn't respect box-sizing, padding, or width.
-   *
-   * 1. Address box sizing set to `content-box` in IE 8/9/10.
-   * 2. Remove excess padding in IE 8/9/10.
-   * 3. Remove excess padding in IE 7.
-   *    Known issue: excess padding remains in IE 6.
-   */
-input[type="checkbox"],
-input[type="radio"] {
+ * 1. Add the correct box sizing in IE <11.
+ * 2. Remove the padding in IE <11.
+ * 3. Remove excess padding in IE 7.
+ *    Known issue: excess padding remains in IE 6.
+ */
+[type="checkbox"],
+[type="radio"] {
   -moz-box-sizing: border-box;
   -webkit-box-sizing: border-box;
   box-sizing: border-box;
@@ -402,35 +417,46 @@ input[type="radio"] {
   /* 3 */ }
 
 /**
- * Fix the cursor style for Chrome's increment/decrement buttons. For certain
- * `font-size` values of the `input`, it causes the cursor style of the
- * decrement button to change from `default` to `text`.
+ * Correct the cursor style of increment and decrement buttons in Chrome.
  */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
- * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
- * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+ * 1. Correct the odd appearance in Chrome and Safari.
+ * 2. Correct the outline style in Safari.
  */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  -moz-box-sizing: content-box;
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-   * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-   * Safari (but not Chrome) clips the cancel button when the search input has
-   * padding (and `textfield` appearance).
+   * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
    */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
- * Define consistent border, margin, and padding.
+ * Correct the text style of placeholders in Chrome, Edge, and Safari.
+ */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+ * 1. Correct the inability to style clickable types in iOS and Safari.
+ * 2. Change font properties to `inherit` in Safari.
+ */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+ * Change the border, margin, and padding in all browsers (opinionated).
  */
 fieldset {
   margin: 0 2px;
@@ -450,40 +476,36 @@ fieldset {
   padding-right: 0.875em; }
 
 /**
- * 1. Correct `color` not being inherited in IE 8/9/10/11.
- * 2. Remove padding so people aren't caught out if they zero out fieldsets.
- * 3. Correct alignment displayed oddly in IE 6/7.
+ * 1. Correct the text wrapping in Edge and IE.
+ * 2. Correct the color inheritance from `fieldset` elements in IE.
+ * 3. Remove the padding so developers are not caught out when they zero out
+ *    `fieldset` elements in all browsers.
+ * 4. Correct alignment displayed oddly in IE 6/7.
  */
 legend {
-  border: 0;
+  box-sizing: border-box;
   /* 1 */
-  padding: 0;
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
   /* 2 */
+  padding: 0;
+  /* 3 */
   *margin-left: -7px;
-  /* 3 */ }
-
-/**
- * Remove default vertical scrollbar in IE 8/9/10/11.
- */
-textarea {
-  overflow: auto; }
+  /* 4 */ }
 
 /**
- * Don't inherit the `font-weight` (applied by a rule above).
- * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+ * Restore the font weight unset by a previous rule.
  */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-   ========================================================================== */
 /**
- * Remove most spacing between table cells.
+ * Remove the default vertical scrollbar in IE.
  */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/fork-versions/typey-chroma-kss/output.css b/test/fixtures/fork-versions/typey-chroma-kss/output.css
index b993a45..2f3ee21 100644
--- a/test/fixtures/fork-versions/typey-chroma-kss/output.css
+++ b/test/fixtures/fork-versions/typey-chroma-kss/output.css
@@ -24,7 +24,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -36,32 +35,33 @@ audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  vertical-align: baseline; }
+  display: inline-block; }
 
 audio:not([controls]) {
   display: none;
   height: 0; }
 
-[hidden] {
-  display: none; }
+progress {
+  vertical-align: baseline; }
 
-template {
+template,
+[hidden] {
   display: none; }
 
 :link {
-  color: #0072b9; }
+  color: #0072b9;
+  background-color: transparent;
+  -webkit-text-decoration-skip: objects; }
 
 :visited {
   color: #003353; }
 
 a:active {
-  color: #c00;
-  background-color: transparent; }
+  color: #c00; }
 
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 @media print {
   :link,
@@ -113,20 +113,34 @@ h6 {
   margin-bottom: 1.5rem; }
 
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  text-decoration: underline;
+  text-decoration: underline dotted; }
   @media print {
     abbr[title]:after {
       content: " (" attr(title) ")"; } }
 
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+b,
+strong {
+  font-weight: bolder; }
+
+pre,
+code,
+kbd,
+samp,
+var {
+  font-family: Menlo, "DejaVu Sans Mono", "Ubuntu Mono", Courier, "Courier New", monospace, sans-serif;
+  font-size: 1em; }
 
 dfn {
   font-style: italic; }
 
 mark {
-  background: #fd0;
+  background-color: #fd0;
   color: #000; }
 
 small {
@@ -139,12 +153,12 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -.5em; }
-
 sub {
   bottom: -.25em; }
 
+sup {
+  top: -.5em; }
+
 .divider,
 hr {
   margin: 1.5rem 0;
@@ -153,6 +167,9 @@ hr {
   .divider > :first-child, hr > :first-child {
     margin-top: 1.5rem; }
 
+blockquote {
+  margin: 1.5rem 2rem; }
+
 dl,
 menu,
 ol,
@@ -173,32 +190,20 @@ ol,
 ul {
   padding: 0 0 0 32px; }
 
-blockquote {
-  margin: 1.5rem 2rem; }
-
 figure {
   margin: 1.5rem 2rem; }
 
 hr {
   box-sizing: content-box;
-  height: 0; }
+  height: 0;
+  overflow: visible; }
 
 p,
 pre {
   margin: 1.5rem 0; }
 
-code,
-kbd,
-samp,
-var, pre {
-  font-family: Menlo, "DejaVu Sans Mono", "Ubuntu Mono", Courier, "Courier New", monospace, sans-serif;
-  font-size: 1em; }
-
-pre {
-  overflow: auto; }
-
 img {
-  border: 0; }
+  border-style: none; }
 
 img,
 svg {
@@ -265,7 +270,6 @@ select,
 textarea {
   box-sizing: border-box;
   max-width: 100%;
-  color: inherit;
   font: inherit;
   margin: 0; }
 
@@ -276,30 +280,48 @@ button,
 select {
   text-transform: none; }
 
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
-
-html input[type="button"],
+button,
+html [type="button"],
 [type="reset"],
 [type="submit"] {
   -webkit-appearance: button; }
 
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
+
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
+
+input {
+  overflow: visible; }
+
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
-input[type="search"] {
-  -webkit-appearance: textfield; }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+[type="search"] {
+  -webkit-appearance: textfield;
+  outline-offset: -2px; }
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
-input[type="text"], input[type="search"], input[type="tel"], input[type="url"], input[type="email"], input[type="password"], input[type="date"], input[type="time"], input[type="number"], textarea {
-  line-height: inherit; }
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  font: inherit; }
 
-input[type="checkbox"],
-input[type="radio"] {
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   padding: 0; }
 
@@ -309,7 +331,11 @@ fieldset {
   margin: 0 2px; }
 
 legend {
-  border: 0;
+  box-sizing: border-box;
+  display: table;
+  max-width: 100%;
+  white-space: normal;
+  color: inherit;
   margin-left: -5px;
   padding: 0 5px; }
 
diff --git a/test/fixtures/fork-versions/typey/output.css b/test/fixtures/fork-versions/typey/output.css
index bfd0949..af0725c 100644
--- a/test/fixtures/fork-versions/typey/output.css
+++ b/test/fixtures/fork-versions/typey/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
- * 1. Set default font family to sans-serif.
- * 2. Prevent iOS and IE text size adjust after device orientation change,
- *    without disabling user zoom.
+ * 1. Change the default font family in all browsers (opinionated).
+ * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
  */
 html {
   font-size: 100%;
@@ -18,7 +17,7 @@ html {
       font-size: 12pt; } }
 
 /**
- * Remove default margin.
+ * Remove the margin in all browsers (opinionated).
  */
 body {
   margin: 0; }
@@ -26,10 +25,9 @@ body {
 /* HTML5 display definitions
    ========================================================================== */
 /**
- * Correct `block` display not defined for any HTML5 element in IE 8/9.
- * Correct `block` display not defined for `details` or `summary` in IE 10/11
- * and Firefox.
- * Correct `block` display not defined for `main` in IE 11.
+ * Add the correct display in IE <10.
+ * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+ * Add the correct display in IE for `main`.
  */
 article,
 aside,
@@ -38,7 +36,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -47,78 +44,105 @@ summary {
   display: block; }
 
 /**
- * 1. Correct `inline-block` display not defined in IE 8/9.
- * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+ * Add the correct display in IE <10.
  */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
- * Prevent modern browsers from displaying `audio` without controls.
- * Remove excess height in iOS 5 devices.
+ * Add the correct display and remove excess height in iOS 4-7.
  */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-   * Address `[hidden]` styling not present in IE 8/9/10.
-   */
-[hidden] {
-  display: none; }
+ * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+ */
+progress {
+  vertical-align: baseline; }
 
 /**
- * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+ * Add the correct display in IE <11, Safari <8, and Firefox <22.
+ * 1. Add the correct display in IE.
  */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
    ========================================================================== */
 /**
- * Remove the gray background color from active links in IE 10.
+ * 1. Remove the gray background on active links in IE 10.
+ * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
  */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
- * Improve readability of focused elements when they are also in an
- * active/hover state.
+ * Remove the outline on focused links when they are also active or hovered
+ * in all browsers (opinionated).
  */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
    ========================================================================== */
 /**
- * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+ * 1. Remove the bottom border in Firefox <40.
+ * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
  */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
- * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+ * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
  */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+ * Add the correct font weight in Chrome, Edge, and Safari.
+ */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+pre,
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  /* 1 */
+  font-size: 1em;
+  /* 2 */ }
 
 /**
- * Address styling not present in Safari and Chrome.
+ * Add the correct font style in Android <4.4.
  */
 dfn {
   font-style: italic; }
 
 /**
- * Address variable `h1` font-size and margin within `section` and `article`
- * contexts in Firefox 4+, Safari, and Chrome.
+ * Correct the font size and margin on `h1` elements within `section` and
+ * `article` contexts in Chrome, Firefox, and Safari.
  */
 h1 {
   font-size: 2rem;
@@ -152,20 +176,21 @@ h6 {
   margin: 1.5rem 0; }
 
 /**
-   * Address styling not present in IE 8/9.
-   */
+ * Add the correct background and color in IE <10.
+ */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
- * Address inconsistent and variable font size in all browsers.
+ * Add the correct font size in all browsers.
  */
 small {
   font-size: 80%; }
 
 /**
- * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+ * Prevent `sub` and `sup` elements from affecting the line height in
+ * all browsers.
  */
 sub,
 sup {
@@ -174,22 +199,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
    ========================================================================== */
 /**
-   * Remove border when inside `a` element in IE 8/9/10.
-   */
+ * Remove the border on images inside links in IE <11.
+ */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
- * Correct overflow not hidden in IE 9/10/11.
+ * Hide the overflow in IE.
  */
 svg:not(:root) {
   overflow: hidden; }
@@ -197,6 +222,12 @@ svg:not(:root) {
 /* Grouping content
    ========================================================================== */
 /**
+ * Set 1 unit of vertical rhythm on the top and bottom margin.
+ */
+blockquote {
+  margin: 1.5rem 2.5rem; }
+
+/**
  * Address margins set differently in IE 6/7.
  */
 dl,
@@ -226,23 +257,22 @@ ul {
   padding: 0 0 0 40px; }
 
 /**
- * Set 1 unit of vertical rhythm on the top and bottom margin.
- */
-blockquote {
-  margin: 1.5rem 2.5rem; }
-
-/**
- * Address margin not present in IE 8/9 and Safari.
+ * Add the correct margin in IE 8.
  */
 figure {
   margin: 1.5rem 2.5rem; }
 
 /**
- * Address differences between Firefox and other browsers.
+ * 1. Add the correct box sizing in Firefox.
+ * 2. Show the overflow in Edge and IE.
  */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /**
  * Set 1 unit of vertical rhythm on the top and bottom margin.
@@ -251,147 +281,149 @@ p,
 pre {
   margin: 1.5rem 0; }
 
-/**
- * Contain overflow in all browsers.
- */
-pre {
-  overflow: auto; }
-
-/**
- * Address odd `em`-unit font size rendering in all browsers.
- */
-code,
-kbd,
-samp, pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
 /* Forms
    ========================================================================== */
 /**
- * Known limitation: by default, Chrome and Safari on OS X allow very limited
- * styling of `select`, unless a `border` property is set.
- */
-/**
- * 1. Correct color not being inherited.
- *    Known issue: affects color of disabled elements.
- * 2. Correct font properties not being inherited.
- * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
- * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
- * 5. Improve appearance and consistency with IE 6/7.
+ * Known issues:
+ * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+ *   select, unless a border property is set. The default font weight on
+ *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+ *   OS X.
+ * - It is recommended that you do not style checkbox and radio inputs as
+ *   Firefox's implementation does not respect box-sizing, padding, or width.
+ * - Certain font size values applied to number inputs cause the cursor style of
+ *   the decrement button to change from default to text.
+ * - The search input is not fully stylable by default. In Chrome and Safari on
+ *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+ *   and Safari on Windows you can't control border properly. It will apply
+ *   border-width but will only show a border color (which cannot be controlled)
+ *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+ *   addresses these issues without removing the benefits of search inputs (e.g.
+ *   showing past searches). Safari (but not Chrome) will clip the cancel button
+ *   on when it has padding (and textfield appearance).
+ */
+/**
+ * 1. Change font properties to `inherit` in all browsers (opinionated).
+ * 2. Remove the margin in Firefox and Safari.
+ * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+ * 4. Improve appearance and consistency with IE 6/7.
  */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
- * Address `overflow` set to `hidden` in IE 8/9/10/11.
+ * Show the overflow in IE.
  */
 button {
   overflow: visible; }
 
 /**
- * Address inconsistent `text-transform` inheritance for `button` and `select`.
- * All other form control elements do not inherit `text-transform` values.
- * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
- * Correct `select` style inheritance in Firefox.
+ * Remove the inheritance of text transform in Edge, Firefox, and IE.
+ * 1. Remove the inheritance of text transform in Firefox.
  */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
- * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
- *    and `video` controls.
- * 2. Correct inability to style clickable `input` types in iOS.
- * 3. Improve usability and consistency of cursor style between image-type
- *    `input` and others.
- * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
- *    Known issue: inner spacing remains in IE 6.
+ * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+ *    controls in Android 4.
+ * 2. Correct the inability to style clickable types in iOS and Safari.
  */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
- * Re-set default cursor for disabled elements.
+ * Remove the inner border and padding in Firefox.
  */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
- * Remove inner padding and border in Firefox 4+.
+ * Restore the focus styles unset by the previous rule.
  */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
- * Address Firefox 4+ setting `line-height` on `input` using `!important` in
- * the UA stylesheet.
+ * Show the overflow in Edge.
  */
 input {
-  line-height: normal; }
-
-/**
-   * It's recommended that you don't attempt to style these elements.
-   * Firefox's implementation doesn't respect box-sizing, padding, or width.
-   *
-   * 1. Address box sizing set to `content-box` in IE 8/9/10.
-   * 2. Remove excess padding in IE 8/9/10.
-   * 3. Remove excess padding in IE 7.
-   *    Known issue: excess padding remains in IE 6.
-   */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+ * 1. Add the correct box sizing in IE <11.
+ * 2. Remove the padding in IE <11.
+ * 3. Remove excess padding in IE 7.
+ *    Known issue: excess padding remains in IE 6.
+ */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
- * Fix the cursor style for Chrome's increment/decrement buttons. For certain
- * `font-size` values of the `input`, it causes the cursor style of the
- * decrement button to change from `default` to `text`.
+ * Correct the cursor style of increment and decrement buttons in Chrome.
  */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
- * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
- * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+ * 1. Correct the odd appearance in Chrome and Safari.
+ * 2. Correct the outline style in Safari.
  */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-   * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-   * Safari (but not Chrome) clips the cancel button when the search input has
-   * padding (and `textfield` appearance).
+   * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
    */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
- * Define consistent border, margin, and padding.
+ * Correct the text style of placeholders in Chrome, Edge, and Safari.
+ */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+ * 1. Correct the inability to style clickable types in iOS and Safari.
+ * 2. Change font properties to `inherit` in Safari.
+ */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+ * Change the border, margin, and padding in all browsers (opinionated).
  */
 fieldset {
   padding: 0.525rem 0.9375rem 0.975rem;
@@ -399,38 +431,34 @@ fieldset {
   margin: 0 2px; }
 
 /**
- * 1. Correct `color` not being inherited in IE 8/9/10/11.
- * 2. Remove padding so people aren't caught out if they zero out fieldsets.
- * 3. Correct alignment displayed oddly in IE 6/7.
+ * 1. Correct the text wrapping in Edge and IE.
+ * 2. Correct the color inheritance from `fieldset` elements in IE.
+ * 3. Remove the padding so developers are not caught out when they zero out
+ *    `fieldset` elements in all browsers.
+ * 4. Correct alignment displayed oddly in IE 6/7.
  */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
   /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
- * Remove default vertical scrollbar in IE 8/9/10/11.
- */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
- * Don't inherit the `font-weight` (applied by a rule above).
- * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+ * Restore the font weight unset by a previous rule.
  */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-   ========================================================================== */
 /**
- * Remove most spacing between table cells.
+ * Remove the default vertical scrollbar in IE.
  */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/import-now/output.css b/test/fixtures/import-now/output.css
index e19499d..c0b488c 100644
--- a/test/fixtures/import-now/output.css
+++ b/test/fixtures/import-now/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,160 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -327,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
   /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/normalize/exclude-multiple/output.css b/test/fixtures/normalize/exclude-multiple/output.css
index a9d3184..9fd06a5 100644
--- a/test/fixtures/normalize/exclude-multiple/output.css
+++ b/test/fixtures/normalize/exclude-multiple/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
+
+/**
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,138 +165,155 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
      */
 /**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -282,38 +321,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
   /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/normalize/exclude-single/output.css b/test/fixtures/normalize/exclude-single/output.css
index fb447ef..6ee0f9b 100644
--- a/test/fixtures/normalize/exclude-single/output.css
+++ b/test/fixtures/normalize/exclude-single/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,43 +188,23 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
-
-/* Tables
-       ========================================================================== */
-/**
-     * Remove most spacing between table cells.
-     */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
diff --git a/test/fixtures/normalize/exclude-string/output.css b/test/fixtures/normalize/exclude-string/output.css
index 0c1b015..c0b488c 100644
--- a/test/fixtures/normalize/exclude-string/output.css
+++ b/test/fixtures/normalize/exclude-string/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,160 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
      */
 /**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -327,25 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
   /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
+  /* 3 */ }
 
 /**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
+     * Restore the font weight unset by a previous rule.
      */
-textarea {
-  overflow: auto; }
+optgroup {
+  font-weight: bold; }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Remove the default vertical scrollbar in IE.
      */
-optgroup {
-  font-weight: bold; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/normalize/include-multiple/output.css b/test/fixtures/normalize/include-multiple/output.css
index 78b32ed..75e1da7 100644
--- a/test/fixtures/normalize/include-multiple/output.css
+++ b/test/fixtures/normalize/include-multiple/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,34 +39,31 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
diff --git a/test/fixtures/normalize/include-single/output.css b/test/fixtures/normalize/include-single/output.css
index ba6a833..71978f3 100644
--- a/test/fixtures/normalize/include-single/output.css
+++ b/test/fixtures/normalize/include-single/output.css
@@ -2,15 +2,19 @@
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
diff --git a/test/fixtures/normalize/include-string/output.css b/test/fixtures/normalize/include-string/output.css
index 0e428a0..89b6b57 100644
--- a/test/fixtures/normalize/include-string/output.css
+++ b/test/fixtures/normalize/include-string/output.css
@@ -2,27 +2,50 @@
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
+
+/**
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -30,20 +53,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -52,8 +76,8 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
+
+sup {
+  top: -0.5em; }
diff --git a/test/fixtures/variables/default/output.css b/test/fixtures/variables/default/output.css
index e19499d..c0b488c 100644
--- a/test/fixtures/variables/default/output.css
+++ b/test/fixtures/variables/default/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,160 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -327,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
   /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/font/output.css b/test/fixtures/variables/font/output.css
index 735dca1..92f24a7 100644
--- a/test/fixtures/variables/font/output.css
+++ b/test/fixtures/variables/font/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-size: 150%;
@@ -15,7 +14,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -23,10 +22,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -35,7 +33,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -44,78 +41,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
+
+/**
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 72px;
@@ -167,20 +188,21 @@ h6 {
   margin: 1.5rem 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -189,22 +211,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -212,6 +234,13 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
+       * Set 1 unit of vertical rhythm on the top and bottom margin.
+       */
+blockquote {
+  margin: 36px 40px;
+  margin: 1.5rem 40px; }
+
+/**
        * Address margins set differently in IE 6/7.
        */
 dl,
@@ -222,8 +251,8 @@ ul {
   margin: 1.5rem 0; }
 
 /**
-       * Turn off margins on nested lists.
-       */
+         * Turn off margins on nested lists.
+         */
 ol ol,
 ol ul,
 ul ol,
@@ -242,25 +271,23 @@ ul {
   padding: 0 0 0 40px; }
 
 /**
-       * Set 1 unit of vertical rhythm on the top and bottom margin.
-       */
-blockquote {
-  margin: 36px 40px;
-  margin: 1.5rem 40px; }
-
-/**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 36px 40px;
   margin: 1.5rem 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /**
        * Set 1 unit of vertical rhythm on the top and bottom margin.
@@ -270,148 +297,153 @@ pre {
   margin: 36px 0;
   margin: 1.5rem 0; }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
+  overflow: visible; }
 
 /**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -419,38 +451,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
   /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/indent-amount/output.css b/test/fixtures/variables/indent-amount/output.css
index 54befc8..0df4d40 100644
--- a/test/fixtures/variables/indent-amount/output.css
+++ b/test/fixtures/variables/indent-amount/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-size: 100%;
@@ -15,7 +14,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -23,10 +22,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -35,7 +33,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -44,78 +41,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -149,20 +170,21 @@ h6 {
   margin: 2.23881em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -171,22 +193,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -194,6 +216,12 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
+       * Set 1 unit of vertical rhythm on the top and bottom margin.
+       */
+blockquote {
+  margin: 1.5em 3em; }
+
+/**
        * Address margins set differently in IE 6/7.
        */
 dl,
@@ -203,8 +231,8 @@ ul {
   margin: 1.5em 0; }
 
 /**
-       * Turn off margins on nested lists.
-       */
+         * Turn off margins on nested lists.
+         */
 ol ol,
 ol ul,
 ul ol,
@@ -223,23 +251,22 @@ ul {
   padding: 0 0 0 3em; }
 
 /**
-       * Set 1 unit of vertical rhythm on the top and bottom margin.
-       */
-blockquote {
-  margin: 1.5em 3em; }
-
-/**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 3em; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /**
        * Set 1 unit of vertical rhythm on the top and bottom margin.
@@ -248,148 +275,153 @@ p,
 pre {
   margin: 1.5em 0; }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
+  overflow: visible; }
 
 /**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -397,38 +429,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
   /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/chrome9/output.css b/test/fixtures/variables/support-for/chrome9/output.css
deleted file mode 100644
index 88206ef..0000000
--- a/test/fixtures/variables/support-for/chrome9/output.css
+++ /dev/null
@@ -1,314 +0,0 @@
-/*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
-/**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
-     */
-html {
-  font-family: sans-serif;
-  /* 1 */
-  -ms-text-size-adjust: 100%;
-  /* 2 */
-  -webkit-text-size-adjust: 100%;
-  /* 2 */ }
-
-/**
-     * Remove default margin.
-     */
-body {
-  margin: 0; }
-
-/* HTML5 display definitions
-       ========================================================================== */
-/**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
-     */
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section,
-summary {
-  display: block; }
-
-/**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
-     */
-audio,
-canvas,
-progress,
-video {
-  vertical-align: baseline;
-  /* 2 */ }
-
-/**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
-     */
-audio:not([controls]) {
-  display: none;
-  height: 0; }
-
-/**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
-     */
-template {
-  display: none; }
-
-/* Links
-       ========================================================================== */
-/**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
-     */
-a:active,
-a:hover {
-  outline: 0; }
-
-/* Text-level semantics
-       ========================================================================== */
-/**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
-     */
-abbr[title] {
-  border-bottom: 1px dotted; }
-
-/**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
-     */
-b,
-strong {
-  font-weight: bold; }
-
-/**
-     * Address styling not present in Safari and Chrome.
-     */
-dfn {
-  font-style: italic; }
-
-/**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
-     */
-h1 {
-  font-size: 2em;
-  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
-  margin: 0.75em 0; }
-
-/**
-     * Address inconsistent and variable font size in all browsers.
-     */
-small {
-  font-size: 80%; }
-
-/**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
-     */
-sub,
-sup {
-  font-size: 75%;
-  line-height: 0;
-  position: relative;
-  vertical-align: baseline; }
-
-sup {
-  top: -0.5em; }
-
-sub {
-  bottom: -0.25em; }
-
-/* Embedded content
-       ========================================================================== */
-/**
-     * Correct overflow not hidden in IE 9/10/11.
-     */
-svg:not(:root) {
-  overflow: hidden; }
-
-/* Grouping content
-       ========================================================================== */
-/**
-     * Address differences between Firefox and other browsers.
-     */
-hr {
-  box-sizing: content-box;
-  height: 0; }
-
-/**
-     * Contain overflow in all browsers.
-     */
-pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-/* Forms
-       ========================================================================== */
-/**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
-     */
-button,
-input,
-optgroup,
-select,
-textarea {
-  color: inherit;
-  /* 1 */
-  font: inherit;
-  /* 2 */
-  margin: 0;
-  /* 3 */ }
-
-/**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
-     */
-button {
-  overflow: visible; }
-
-/**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
-     */
-button,
-select {
-  text-transform: none; }
-
-/**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
-     */
-button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
-  -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
-
-/**
-     * Re-set default cursor for disabled elements.
-     */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
-
-/**
-     * Remove inner padding and border in Firefox 4+.
-     */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
-
-/**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
-     */
-input {
-  line-height: normal; }
-
-/**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
-     */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
-  height: auto; }
-
-/**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
-     */
-input[type="search"] {
-  -webkit-appearance: textfield;
-  /* 1 */
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
-  /* 2 */
-  /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
-       */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
-    -webkit-appearance: none; }
-
-/**
-     * Define consistent border, margin, and padding.
-     */
-fieldset {
-  border: 1px solid #c0c0c0;
-  margin: 0 2px;
-  padding: 0.35em 0.625em 0.75em; }
-
-/**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
-     */
-legend {
-  padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
-
-/**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
-     */
-optgroup {
-  font-weight: bold; }
-
-/* Tables
-       ========================================================================== */
-/**
-     * Remove most spacing between table cells.
-     */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
diff --git a/test/fixtures/variables/support-for/firefox28/input.scss b/test/fixtures/variables/support-for/firefox28/input.scss
deleted file mode 100644
index d0fc97f..0000000
--- a/test/fixtures/variables/support-for/firefox28/input.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-$support-for: (
-  firefox: 28,
-);
-
-@import 'normalize';
-@include normalize();
diff --git a/test/fixtures/variables/support-for/firefox28/output.css b/test/fixtures/variables/support-for/firefox28/output.css
deleted file mode 100644
index e26e100..0000000
--- a/test/fixtures/variables/support-for/firefox28/output.css
+++ /dev/null
@@ -1,314 +0,0 @@
-/*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
-/**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
-     */
-html {
-  font-family: sans-serif;
-  /* 1 */
-  -ms-text-size-adjust: 100%;
-  /* 2 */
-  -webkit-text-size-adjust: 100%;
-  /* 2 */ }
-
-/**
-     * Remove default margin.
-     */
-body {
-  margin: 0; }
-
-/* HTML5 display definitions
-       ========================================================================== */
-/**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
-     */
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section,
-summary {
-  display: block; }
-
-/**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
-     */
-audio,
-canvas,
-progress,
-video {
-  vertical-align: baseline;
-  /* 2 */ }
-
-/**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
-     */
-audio:not([controls]) {
-  display: none;
-  height: 0; }
-
-/**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
-     */
-template {
-  display: none; }
-
-/* Links
-       ========================================================================== */
-/**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
-     */
-a:active,
-a:hover {
-  outline: 0; }
-
-/* Text-level semantics
-       ========================================================================== */
-/**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
-     */
-abbr[title] {
-  border-bottom: 1px dotted; }
-
-/**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
-     */
-b,
-strong {
-  font-weight: bold; }
-
-/**
-     * Address styling not present in Safari and Chrome.
-     */
-dfn {
-  font-style: italic; }
-
-/**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
-     */
-h1 {
-  font-size: 2em;
-  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
-  margin: 0.75em 0; }
-
-/**
-     * Address inconsistent and variable font size in all browsers.
-     */
-small {
-  font-size: 80%; }
-
-/**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
-     */
-sub,
-sup {
-  font-size: 75%;
-  line-height: 0;
-  position: relative;
-  vertical-align: baseline; }
-
-sup {
-  top: -0.5em; }
-
-sub {
-  bottom: -0.25em; }
-
-/* Embedded content
-       ========================================================================== */
-/**
-     * Correct overflow not hidden in IE 9/10/11.
-     */
-svg:not(:root) {
-  overflow: hidden; }
-
-/* Grouping content
-       ========================================================================== */
-/**
-     * Address differences between Firefox and other browsers.
-     */
-hr {
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
-  height: 0; }
-
-/**
-     * Contain overflow in all browsers.
-     */
-pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-/* Forms
-       ========================================================================== */
-/**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
-     */
-button,
-input,
-optgroup,
-select,
-textarea {
-  color: inherit;
-  /* 1 */
-  font: inherit;
-  /* 2 */
-  margin: 0;
-  /* 3 */ }
-
-/**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
-     */
-button {
-  overflow: visible; }
-
-/**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
-     */
-button,
-select {
-  text-transform: none; }
-
-/**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
-     */
-button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
-  -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
-
-/**
-     * Re-set default cursor for disabled elements.
-     */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
-
-/**
-     * Remove inner padding and border in Firefox 4+.
-     */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
-
-/**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
-     */
-input {
-  line-height: normal; }
-
-/**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
-     */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
-  height: auto; }
-
-/**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
-     */
-input[type="search"] {
-  -webkit-appearance: textfield;
-  /* 1 */
-  box-sizing: content-box;
-  /* 2 */
-  /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
-       */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
-    -webkit-appearance: none; }
-
-/**
-     * Define consistent border, margin, and padding.
-     */
-fieldset {
-  border: 1px solid #c0c0c0;
-  margin: 0 2px;
-  padding: 0.35em 0.625em 0.75em; }
-
-/**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
-     */
-legend {
-  padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
-
-/**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
-     */
-optgroup {
-  font-weight: bold; }
-
-/* Tables
-       ========================================================================== */
-/**
-     * Remove most spacing between table cells.
-     */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
diff --git a/test/fixtures/variables/support-for/chrome9/input.scss b/test/fixtures/variables/support-for/firefox29/input.scss
index 987e278..3e5b271 100644
--- a/test/fixtures/variables/support-for/chrome9/input.scss
+++ b/test/fixtures/variables/support-for/firefox29/input.scss
@@ -1,5 +1,5 @@
 $support-for: (
-  chrome: 9,
+  firefox: 29,
 );
 
 @import 'normalize';
diff --git a/test/fixtures/variables/support-for/firefox29/output.css b/test/fixtures/variables/support-for/firefox29/output.css
new file mode 100644
index 0000000..3df3b76
--- /dev/null
+++ b/test/fixtures/variables/support-for/firefox29/output.css
@@ -0,0 +1,393 @@
+/*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
+/**
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
+     */
+html {
+  font-family: sans-serif;
+  /* 1 */
+  -ms-text-size-adjust: 100%;
+  /* 2 */
+  -webkit-text-size-adjust: 100%;
+  /* 2 */ }
+
+/**
+     * Remove the margin in all browsers (opinionated).
+     */
+body {
+  margin: 0; }
+
+/* HTML5 display definitions
+       ========================================================================== */
+/**
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
+     */
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+main,
+menu,
+nav,
+section,
+summary {
+  display: block; }
+
+/**
+     * Add the correct display in IE <10.
+     */
+audio,
+canvas,
+progress,
+video {
+  display: inline-block; }
+
+/**
+     * Add the correct display and remove excess height in iOS 4-7.
+     */
+audio:not([controls]) {
+  display: none;
+  height: 0; }
+
+/**
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
+
+/**
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
+     */
+template,
+[hidden] {
+  display: none; }
+
+/* Links
+       ========================================================================== */
+/**
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
+a {
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
+
+/**
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
+     */
+a:active,
+a:hover {
+  outline-width: 0; }
+
+/* Text-level semantics
+       ========================================================================== */
+/**
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+     */
+abbr[title] {
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
+
+/**
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
+     */
+b,
+strong {
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
+
+/**
+     * Add the correct font style in Android <4.4.
+     */
+dfn {
+  font-style: italic; }
+
+/**
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
+     */
+h1 {
+  font-size: 2em;
+  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
+  margin: 0.75em 0; }
+
+/**
+     * Add the correct background and color in IE <10.
+     */
+mark {
+  background-color: #ff0;
+  color: #000; }
+
+/**
+     * Add the correct font size in all browsers.
+     */
+small {
+  font-size: 80%; }
+
+/**
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
+     */
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline; }
+
+sub {
+  bottom: -0.25em; }
+
+sup {
+  top: -0.5em; }
+
+/* Embedded content
+       ========================================================================== */
+/**
+     * Remove the border on images inside links in IE <11.
+     */
+img {
+  border-style: none; }
+
+/**
+     * Hide the overflow in IE.
+     */
+svg:not(:root) {
+  overflow: hidden; }
+
+/* Grouping content
+       ========================================================================== */
+/**
+     * Add the correct margin in IE 8.
+     */
+figure {
+  margin: 1.5em 40px; }
+
+/**
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
+     */
+hr {
+  box-sizing: content-box;
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
+
+pre {
+  font-family: monospace, monospace;
+  font-size: 1em; }
+
+/* Forms
+       ========================================================================== */
+/**
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
+     */
+button,
+input,
+optgroup,
+select,
+textarea {
+  font: inherit;
+  /* 1 */
+  margin: 0;
+  /* 2 */ }
+
+/**
+     * Show the overflow in IE.
+     */
+button {
+  overflow: visible; }
+
+/**
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
+     */
+button,
+select {
+  /* 1 */
+  text-transform: none; }
+
+/**
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
+     */
+button,
+html [type="button"],
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: button;
+  /* 2 */ }
+
+/**
+     * Remove the inner border and padding in Firefox.
+     */
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
+
+/**
+     * Restore the focus styles unset by the previous rule.
+     */
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
+
+/**
+     * Show the overflow in Edge.
+     */
+input {
+  overflow: visible;
+  line-height: normal; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
+  box-sizing: border-box;
+  /* 1 */
+  padding: 0;
+  /* 2 */ }
+
+/**
+     * Correct the cursor style of increment and decrement buttons in Chrome.
+     */
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
+  height: auto; }
+
+/**
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
+     */
+[type="search"] {
+  -webkit-appearance: textfield;
+  /* 1 */
+  outline-offset: -2px;
+  /* 2 */
+  /**
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
+       */ }
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
+    -webkit-appearance: none; }
+
+/**
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
+     */
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em; }
+
+/**
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
+     */
+legend {
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
+  padding: 0;
+  /* 3 */ }
+
+/**
+     * Restore the font weight unset by a previous rule.
+     */
+optgroup {
+  font-weight: bold; }
+
+/**
+     * Remove the default vertical scrollbar in IE.
+     */
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/ie10/output.css b/test/fixtures/variables/support-for/ie10/output.css
index 0e75f21..c0b488c 100644
--- a/test/fixtures/variables/support-for/ie10/output.css
+++ b/test/fixtures/variables/support-for/ie10/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,76 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -119,13 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct background and color in IE <10.
+     */
+mark {
+  background-color: #ff0;
+  color: #000; }
+
+/**
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -134,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -157,154 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-     * Address differences between Firefox and other browsers.
+     * Add the correct margin in IE 8.
      */
-hr {
-  box-sizing: content-box;
-  height: 0; }
+figure {
+  margin: 1.5em 40px; }
 
 /**
-     * Contain overflow in all browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
-pre {
-  overflow: auto; }
+hr {
+  box-sizing: content-box;
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
+pre {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -312,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
   /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/ie11/output.css b/test/fixtures/variables/support-for/ie11/output.css
index 1b96241..c0b488c 100644
--- a/test/fixtures/variables/support-for/ie11/output.css
+++ b/test/fixtures/variables/support-for/ie11/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,64 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
      */
-template {
+progress {
+  vertical-align: baseline; }
+
+/**
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
+     */
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
+a {
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
+
+/**
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -107,13 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct background and color in IE <10.
+     */
+mark {
+  background-color: #ff0;
+  color: #000; }
+
+/**
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -122,16 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Remove the border on images inside links in IE <11.
+     */
+img {
+  border-style: none; }
+
+/**
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -139,138 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-     * Address differences between Firefox and other browsers.
+     * Add the correct margin in IE 8.
      */
-hr {
-  box-sizing: content-box;
-  height: 0; }
+figure {
+  margin: 1.5em 40px; }
 
 /**
-     * Contain overflow in all browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
-pre {
-  overflow: auto; }
+hr {
+  box-sizing: content-box;
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
+pre {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
+  overflow: visible; }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="checkbox"],
+[type="radio"] {
+  box-sizing: border-box;
+  /* 1 */
+  padding: 0;
+  /* 2 */ }
+
+/**
+     * Correct the cursor style of increment and decrement buttons in Chrome.
+     */
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -278,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
   /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/ie6/output.css b/test/fixtures/variables/support-for/ie6/output.css
index 72a910c..9a5d478 100644
--- a/test/fixtures/variables/support-for/ie6/output.css
+++ b/test/fixtures/variables/support-for/ie6/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-size: 100%;
@@ -14,7 +13,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -22,10 +21,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -34,7 +32,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -43,80 +40,105 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
   display: inline-block;
-  /* 1 */
   *display: inline;
-  *zoom: 1;
-  vertical-align: baseline;
-  /* 2 */ }
+  *zoom: 1; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  _font-family: 'courier new', monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -144,20 +166,21 @@ h6 {
   margin: 2.23881em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -166,24 +189,24 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0;
+  border-style: none;
   /* Improve image quality when scaled in IE 7. */
   -ms-interpolation-mode: bicubic; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -191,6 +214,12 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
+       * Set 1 unit of vertical rhythm on the top and bottom margin.
+       */
+blockquote {
+  margin: 1.5em 40px; }
+
+/**
        * Address margins set differently in IE 6/7.
        */
 dl,
@@ -219,23 +248,22 @@ nav ol {
   list-style-image: none; }
 
 /**
-       * Set 1 unit of vertical rhythm on the top and bottom margin.
-       */
-blockquote {
-  margin: 1.5em 40px; }
-
-/**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /**
        * Set 1 unit of vertical rhythm on the top and bottom margin.
@@ -244,19 +272,7 @@ p,
 pre {
   margin: 1.5em 0; }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   _font-family: 'courier new', monospace;
   font-size: 1em; }
@@ -264,8 +280,23 @@ samp {
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
      */
 /**
        * Correct margin displayed oddly in IE 6/7.
@@ -274,98 +305,85 @@ form {
   margin: 0; }
 
 /**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */
+  /* 2 */
   *font-family: sans-serif;
-  /* 4 */
+  /* 3 */
   *vertical-align: middle;
-  /* 5 */ }
+  /* 4 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */
-  *overflow: visible;
-  /* 4 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
+  overflow: visible; }
 
 /**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
@@ -376,33 +394,46 @@ input[type="radio"] {
   /* 3 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -410,40 +441,36 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
   /* 1 */
-  padding: 0;
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
   /* 2 */
+  padding: 0;
+  /* 3 */
   *margin-left: -7px;
-  /* 3 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 4 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/ie7/output.css b/test/fixtures/variables/support-for/ie7/output.css
index 9e28cbb..899696d 100644
--- a/test/fixtures/variables/support-for/ie7/output.css
+++ b/test/fixtures/variables/support-for/ie7/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-size: 100%;
@@ -14,7 +13,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -22,10 +21,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -34,7 +32,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -43,80 +40,104 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
   display: inline-block;
-  /* 1 */
   *display: inline;
-  *zoom: 1;
-  vertical-align: baseline;
-  /* 2 */ }
+  *zoom: 1; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
+
+/**
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -144,20 +165,21 @@ h6 {
   margin: 2.23881em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -166,24 +188,24 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0;
+  border-style: none;
   /* Improve image quality when scaled in IE 7. */
   -ms-interpolation-mode: bicubic; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -191,6 +213,12 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
+       * Set 1 unit of vertical rhythm on the top and bottom margin.
+       */
+blockquote {
+  margin: 1.5em 40px; }
+
+/**
        * Address margins set differently in IE 6/7.
        */
 dl,
@@ -219,23 +247,22 @@ nav ol {
   list-style-image: none; }
 
 /**
-       * Set 1 unit of vertical rhythm on the top and bottom margin.
-       */
-blockquote {
-  margin: 1.5em 40px; }
-
-/**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
 /**
        * Set 1 unit of vertical rhythm on the top and bottom margin.
@@ -244,27 +271,30 @@ p,
 pre {
   margin: 1.5em 0; }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
      */
 /**
        * Correct margin displayed oddly in IE 6/7.
@@ -273,98 +303,85 @@ form {
   margin: 0; }
 
 /**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */
+  /* 2 */
   *font-family: sans-serif;
-  /* 4 */
+  /* 3 */
   *vertical-align: middle;
-  /* 5 */ }
+  /* 4 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */
-  *overflow: visible;
-  /* 4 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
+  overflow: visible; }
 
 /**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
@@ -375,33 +392,46 @@ input[type="radio"] {
   /* 3 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -409,40 +439,36 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
   /* 1 */
-  padding: 0;
+  display: table;
+  /* 1 */
+  max-width: 100%;
+  /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
   /* 2 */
+  padding: 0;
+  /* 3 */
   *margin-left: -7px;
-  /* 3 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 4 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/ie8/output.css b/test/fixtures/variables/support-for/ie8/output.css
index e19499d..c0b488c 100644
--- a/test/fixtures/variables/support-for/ie8/output.css
+++ b/test/fixtures/variables/support-for/ie8/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,160 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -327,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
   /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/ie9/output.css b/test/fixtures/variables/support-for/ie9/output.css
index e19499d..c0b488c 100644
--- a/test/fixtures/variables/support-for/ie9/output.css
+++ b/test/fixtures/variables/support-for/ie9/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,78 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  display: inline-block;
-  /* 1 */
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -121,20 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-       * Address styling not present in IE 8/9.
-       */
+     * Add the correct background and color in IE <10.
+     */
 mark {
-  background: #ff0;
+  background-color: #ff0;
   color: #000; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -143,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -166,160 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-       * Address margin not present in IE 8/9 and Safari.
-       */
+     * Add the correct margin in IE 8.
+     */
 figure {
   margin: 1.5em 40px; }
 
 /**
-     * Address differences between Firefox and other browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
 hr {
   box-sizing: content-box;
-  height: 0; }
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Contain overflow in all browsers.
-     */
 pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -327,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
   /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/negative-value/output.css b/test/fixtures/variables/support-for/negative-value/output.css
index 0e75f21..c0b488c 100644
--- a/test/fixtures/variables/support-for/negative-value/output.css
+++ b/test/fixtures/variables/support-for/negative-value/output.css
@@ -1,8 +1,7 @@
 /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
 /**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
+     * 1. Change the default font family in all browsers (opinionated).
+     * 2. Prevent adjustments of font size after orientation changes in IE and iOS.
      */
 html {
   font-family: sans-serif;
@@ -13,7 +12,7 @@ html {
   /* 2 */ }
 
 /**
-     * Remove default margin.
+     * Remove the margin in all browsers (opinionated).
      */
 body {
   margin: 0; }
@@ -21,10 +20,9 @@ body {
 /* HTML5 display definitions
        ========================================================================== */
 /**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
+     * Add the correct display in IE <10.
+     * Add the correct display in Edge, IE, and Firefox for `details` or `summary`.
+     * Add the correct display in IE for `main`.
      */
 article,
 aside,
@@ -33,7 +31,6 @@ figcaption,
 figure,
 footer,
 header,
-hgroup,
 main,
 menu,
 nav,
@@ -42,76 +39,102 @@ summary {
   display: block; }
 
 /**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+     * Add the correct display in IE <10.
      */
 audio,
 canvas,
 progress,
 video {
-  vertical-align: baseline;
-  /* 2 */ }
+  display: inline-block; }
 
 /**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
+     * Add the correct display and remove excess height in iOS 4-7.
      */
 audio:not([controls]) {
   display: none;
   height: 0; }
 
 /**
-       * Address `[hidden]` styling not present in IE 8/9/10.
-       */
-[hidden] {
-  display: none; }
+     * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+     */
+progress {
+  vertical-align: baseline; }
 
 /**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
+     * Add the correct display in IE <11, Safari <8, and Firefox <22.
+     * 1. Add the correct display in IE.
      */
-template {
+template,
+[hidden] {
   display: none; }
 
 /* Links
        ========================================================================== */
 /**
-       * Remove the gray background color from active links in IE 10.
-       */
+     * 1. Remove the gray background on active links in IE 10.
+     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+     */
 a {
-  background-color: transparent; }
+  background-color: transparent;
+  /* 1 */
+  -webkit-text-decoration-skip: objects;
+  /* 2 */ }
 
 /**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
+     * Remove the outline on focused links when they are also active or hovered
+     * in all browsers (opinionated).
      */
 a:active,
 a:hover {
-  outline: 0; }
+  outline-width: 0; }
 
 /* Text-level semantics
        ========================================================================== */
 /**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+     * 1. Remove the bottom border in Firefox <40.
+     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
      */
 abbr[title] {
-  border-bottom: 1px dotted; }
+  border-bottom: none;
+  /* 1 */
+  text-decoration: underline;
+  /* 2 */
+  text-decoration: underline dotted;
+  /* 2 */ }
 
 /**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
      */
 b,
 strong {
-  font-weight: bold; }
+  font-weight: inherit; }
+
+/**
+     * Add the correct font weight in Chrome, Edge, and Safari.
+     */
+b,
+strong {
+  font-weight: bolder; }
+
+/**
+     * 1. Correct the inheritance and scaling of font size in all browsers.
+     * 2. Correct the odd `em` font sizing in all browsers.
+     */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em; }
 
 /**
-     * Address styling not present in Safari and Chrome.
+     * Add the correct font style in Android <4.4.
      */
 dfn {
   font-style: italic; }
 
 /**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
+     * Correct the font size and margin on `h1` elements within `section` and
+     * `article` contexts in Chrome, Firefox, and Safari.
      */
 h1 {
   font-size: 2em;
@@ -119,13 +142,21 @@ h1 {
   margin: 0.75em 0; }
 
 /**
-     * Address inconsistent and variable font size in all browsers.
+     * Add the correct background and color in IE <10.
+     */
+mark {
+  background-color: #ff0;
+  color: #000; }
+
+/**
+     * Add the correct font size in all browsers.
      */
 small {
   font-size: 80%; }
 
 /**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+     * Prevent `sub` and `sup` elements from affecting the line height in
+     * all browsers.
      */
 sub,
 sup {
@@ -134,22 +165,22 @@ sup {
   position: relative;
   vertical-align: baseline; }
 
-sup {
-  top: -0.5em; }
-
 sub {
   bottom: -0.25em; }
 
+sup {
+  top: -0.5em; }
+
 /* Embedded content
        ========================================================================== */
 /**
-       * Remove border when inside `a` element in IE 8/9/10.
-       */
+     * Remove the border on images inside links in IE <11.
+     */
 img {
-  border: 0; }
+  border-style: none; }
 
 /**
-     * Correct overflow not hidden in IE 9/10/11.
+     * Hide the overflow in IE.
      */
 svg:not(:root) {
   overflow: hidden; }
@@ -157,154 +188,170 @@ svg:not(:root) {
 /* Grouping content
        ========================================================================== */
 /**
-     * Address differences between Firefox and other browsers.
+     * Add the correct margin in IE 8.
      */
-hr {
-  box-sizing: content-box;
-  height: 0; }
+figure {
+  margin: 1.5em 40px; }
 
 /**
-     * Contain overflow in all browsers.
+     * 1. Add the correct box sizing in Firefox.
+     * 2. Show the overflow in Edge and IE.
      */
-pre {
-  overflow: auto; }
+hr {
+  box-sizing: content-box;
+  /* 1 */
+  height: 0;
+  /* 1 */
+  overflow: visible;
+  /* 2 */ }
 
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
+pre {
   font-family: monospace, monospace;
   font-size: 1em; }
 
 /* Forms
        ========================================================================== */
 /**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
+     * Known issues:
+     * - By default, Chrome on OS X and Safari on OS X allow very limited styling of
+     *   select, unless a border property is set. The default font weight on
+     *   optgroup elements cannot safely be changed in Chrome on OSX and Safari on
+     *   OS X.
+     * - It is recommended that you do not style checkbox and radio inputs as
+     *   Firefox's implementation does not respect box-sizing, padding, or width.
+     * - Certain font size values applied to number inputs cause the cursor style of
+     *   the decrement button to change from default to text.
+     * - The search input is not fully stylable by default. In Chrome and Safari on
+     *   OSX/iOS you can't control font, padding, border, or background. In Chrome
+     *   and Safari on Windows you can't control border properly. It will apply
+     *   border-width but will only show a border color (which cannot be controlled)
+     *   for the outer 1px of that border. Applying -webkit-appearance: textfield
+     *   addresses these issues without removing the benefits of search inputs (e.g.
+     *   showing past searches). Safari (but not Chrome) will clip the cancel button
+     *   on when it has padding (and textfield appearance).
+     */
+/**
+     * 1. Change font properties to `inherit` in all browsers (opinionated).
+     * 2. Remove the margin in Firefox and Safari.
+     * 3. Address `font-family` inconsistency between `textarea` and other form in IE 7
+     * 4. Improve appearance and consistency with IE 6/7.
      */
 button,
 input,
 optgroup,
 select,
 textarea {
-  color: inherit;
-  /* 1 */
   font: inherit;
-  /* 2 */
+  /* 1 */
   margin: 0;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
+     * Show the overflow in IE.
      */
 button {
   overflow: visible; }
 
 /**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
+     * Remove the inheritance of text transform in Edge, Firefox, and IE.
+     * 1. Remove the inheritance of text transform in Firefox.
      */
 button,
 select {
+  /* 1 */
   text-transform: none; }
 
 /**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
+     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+     *    controls in Android 4.
+     * 2. Correct the inability to style clickable types in iOS and Safari.
      */
 button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
+html [type="button"],
+[type="reset"],
+[type="submit"] {
   -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
+  /* 2 */ }
 
 /**
-     * Re-set default cursor for disabled elements.
+     * Remove the inner border and padding in Firefox.
      */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0; }
 
 /**
-     * Remove inner padding and border in Firefox 4+.
+     * Restore the focus styles unset by the previous rule.
      */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText; }
 
 /**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
+     * Show the overflow in Edge.
      */
 input {
-  line-height: normal; }
-
-/**
-       * It's recommended that you don't attempt to style these elements.
-       * Firefox's implementation doesn't respect box-sizing, padding, or width.
-       *
-       * 1. Address box sizing set to `content-box` in IE 8/9/10.
-       * 2. Remove excess padding in IE 8/9/10.
-       * 3. Remove excess padding in IE 7.
-       *    Known issue: excess padding remains in IE 6.
-       */
-input[type="checkbox"],
-input[type="radio"] {
+  overflow: visible; }
+
+/**
+     * 1. Add the correct box sizing in IE <11.
+     * 2. Remove the padding in IE <11.
+     * 3. Remove excess padding in IE 7.
+     *    Known issue: excess padding remains in IE 6.
+     */
+[type="checkbox"],
+[type="radio"] {
   box-sizing: border-box;
   /* 1 */
   padding: 0;
   /* 2 */ }
 
 /**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
+     * Correct the cursor style of increment and decrement buttons in Chrome.
      */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
   height: auto; }
 
 /**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
+     * 1. Correct the odd appearance in Chrome and Safari.
+     * 2. Correct the outline style in Safari.
      */
-input[type="search"] {
+[type="search"] {
   -webkit-appearance: textfield;
   /* 1 */
-  box-sizing: content-box;
+  outline-offset: -2px;
   /* 2 */
   /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
+       * Remove the inner padding and cancel buttons in Chrome and Safari on OS X.
        */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
+  [type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {
     -webkit-appearance: none; }
 
 /**
-     * Define consistent border, margin, and padding.
+     * Correct the text style of placeholders in Chrome, Edge, and Safari.
+     */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54; }
+
+/**
+     * 1. Correct the inability to style clickable types in iOS and Safari.
+     * 2. Change font properties to `inherit` in Safari.
+     */
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */ }
+
+/**
+     * Change the border, margin, and padding in all browsers (opinionated).
      */
 fieldset {
   border: 1px solid #c0c0c0;
@@ -312,38 +359,34 @@ fieldset {
   padding: 0.35em 0.625em 0.75em; }
 
 /**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
+     * 1. Correct the text wrapping in Edge and IE.
+     * 2. Correct the color inheritance from `fieldset` elements in IE.
+     * 3. Remove the padding so developers are not caught out when they zero out
+     *    `fieldset` elements in all browsers.
+     * 4. Correct alignment displayed oddly in IE 6/7.
      */
 legend {
-  border: 0;
+  box-sizing: border-box;
+  /* 1 */
+  display: table;
+  /* 1 */
+  max-width: 100%;
   /* 1 */
+  white-space: normal;
+  /* 1 */
+  color: inherit;
+  /* 2 */
   padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
+  /* 3 */ }
 
 /**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+     * Restore the font weight unset by a previous rule.
      */
 optgroup {
   font-weight: bold; }
 
-/* Tables
-       ========================================================================== */
 /**
-     * Remove most spacing between table cells.
+     * Remove the default vertical scrollbar in IE.
      */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
+textarea {
+  overflow: auto; }
diff --git a/test/fixtures/variables/support-for/safari5/input.scss b/test/fixtures/variables/support-for/safari5/input.scss
deleted file mode 100644
index 6d49663..0000000
--- a/test/fixtures/variables/support-for/safari5/input.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-$support-for: (
-  safari: 5,
-);
-
-@import 'normalize';
-@include normalize();
diff --git a/test/fixtures/variables/support-for/safari5/output.css b/test/fixtures/variables/support-for/safari5/output.css
deleted file mode 100644
index 30f750e..0000000
--- a/test/fixtures/variables/support-for/safari5/output.css
+++ /dev/null
@@ -1,320 +0,0 @@
-/*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
-/**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
-     */
-html {
-  font-family: sans-serif;
-  /* 1 */
-  -ms-text-size-adjust: 100%;
-  /* 2 */
-  -webkit-text-size-adjust: 100%;
-  /* 2 */ }
-
-/**
-     * Remove default margin.
-     */
-body {
-  margin: 0; }
-
-/* HTML5 display definitions
-       ========================================================================== */
-/**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
-     */
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section,
-summary {
-  display: block; }
-
-/**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
-     */
-audio,
-canvas,
-progress,
-video {
-  vertical-align: baseline;
-  /* 2 */ }
-
-/**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
-     */
-audio:not([controls]) {
-  display: none;
-  height: 0; }
-
-/**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
-     */
-template {
-  display: none; }
-
-/* Links
-       ========================================================================== */
-/**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
-     */
-a:active,
-a:hover {
-  outline: 0; }
-
-/* Text-level semantics
-       ========================================================================== */
-/**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
-     */
-abbr[title] {
-  border-bottom: 1px dotted; }
-
-/**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
-     */
-b,
-strong {
-  font-weight: bold; }
-
-/**
-     * Address styling not present in Safari and Chrome.
-     */
-dfn {
-  font-style: italic; }
-
-/**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
-     */
-h1 {
-  font-size: 2em;
-  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
-  margin: 0.75em 0; }
-
-/**
-     * Address inconsistent and variable font size in all browsers.
-     */
-small {
-  font-size: 80%; }
-
-/**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
-     */
-sub,
-sup {
-  font-size: 75%;
-  line-height: 0;
-  position: relative;
-  vertical-align: baseline; }
-
-sup {
-  top: -0.5em; }
-
-sub {
-  bottom: -0.25em; }
-
-/* Embedded content
-       ========================================================================== */
-/**
-     * Correct overflow not hidden in IE 9/10/11.
-     */
-svg:not(:root) {
-  overflow: hidden; }
-
-/* Grouping content
-       ========================================================================== */
-/**
-       * Address margin not present in IE 8/9 and Safari.
-       */
-figure {
-  margin: 1.5em 40px; }
-
-/**
-     * Address differences between Firefox and other browsers.
-     */
-hr {
-  box-sizing: content-box;
-  height: 0; }
-
-/**
-     * Contain overflow in all browsers.
-     */
-pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-/* Forms
-       ========================================================================== */
-/**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
-     */
-button,
-input,
-optgroup,
-select,
-textarea {
-  color: inherit;
-  /* 1 */
-  font: inherit;
-  /* 2 */
-  margin: 0;
-  /* 3 */ }
-
-/**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
-     */
-button {
-  overflow: visible; }
-
-/**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
-     */
-button,
-select {
-  text-transform: none; }
-
-/**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
-     */
-button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
-  -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
-
-/**
-     * Re-set default cursor for disabled elements.
-     */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
-
-/**
-     * Remove inner padding and border in Firefox 4+.
-     */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
-
-/**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
-     */
-input {
-  line-height: normal; }
-
-/**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
-     */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
-  height: auto; }
-
-/**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
-     */
-input[type="search"] {
-  -webkit-appearance: textfield;
-  /* 1 */
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
-  /* 2 */
-  /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
-       */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
-    -webkit-appearance: none; }
-
-/**
-     * Define consistent border, margin, and padding.
-     */
-fieldset {
-  border: 1px solid #c0c0c0;
-  margin: 0 2px;
-  padding: 0.35em 0.625em 0.75em; }
-
-/**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
-     */
-legend {
-  padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
-
-/**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
-     */
-optgroup {
-  font-weight: bold; }
-
-/* Tables
-       ========================================================================== */
-/**
-     * Remove most spacing between table cells.
-     */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
diff --git a/test/fixtures/variables/support-for/safari6/input.scss b/test/fixtures/variables/support-for/safari6/input.scss
deleted file mode 100644
index b2406b9..0000000
--- a/test/fixtures/variables/support-for/safari6/input.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-$support-for: (
-  safari: 6,
-);
-
-@import 'normalize';
-@include normalize();
diff --git a/test/fixtures/variables/support-for/safari6/output.css b/test/fixtures/variables/support-for/safari6/output.css
deleted file mode 100644
index c61ba98..0000000
--- a/test/fixtures/variables/support-for/safari6/output.css
+++ /dev/null
@@ -1,319 +0,0 @@
-/*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
-/**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
-     */
-html {
-  font-family: sans-serif;
-  /* 1 */
-  -ms-text-size-adjust: 100%;
-  /* 2 */
-  -webkit-text-size-adjust: 100%;
-  /* 2 */ }
-
-/**
-     * Remove default margin.
-     */
-body {
-  margin: 0; }
-
-/* HTML5 display definitions
-       ========================================================================== */
-/**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
-     */
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section,
-summary {
-  display: block; }
-
-/**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
-     */
-audio,
-canvas,
-progress,
-video {
-  vertical-align: baseline;
-  /* 2 */ }
-
-/**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
-     */
-audio:not([controls]) {
-  display: none;
-  height: 0; }
-
-/**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
-     */
-template {
-  display: none; }
-
-/* Links
-       ========================================================================== */
-/**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
-     */
-a:active,
-a:hover {
-  outline: 0; }
-
-/* Text-level semantics
-       ========================================================================== */
-/**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
-     */
-abbr[title] {
-  border-bottom: 1px dotted; }
-
-/**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
-     */
-b,
-strong {
-  font-weight: bold; }
-
-/**
-     * Address styling not present in Safari and Chrome.
-     */
-dfn {
-  font-style: italic; }
-
-/**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
-     */
-h1 {
-  font-size: 2em;
-  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
-  margin: 0.75em 0; }
-
-/**
-     * Address inconsistent and variable font size in all browsers.
-     */
-small {
-  font-size: 80%; }
-
-/**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
-     */
-sub,
-sup {
-  font-size: 75%;
-  line-height: 0;
-  position: relative;
-  vertical-align: baseline; }
-
-sup {
-  top: -0.5em; }
-
-sub {
-  bottom: -0.25em; }
-
-/* Embedded content
-       ========================================================================== */
-/**
-     * Correct overflow not hidden in IE 9/10/11.
-     */
-svg:not(:root) {
-  overflow: hidden; }
-
-/* Grouping content
-       ========================================================================== */
-/**
-       * Address margin not present in IE 8/9 and Safari.
-       */
-figure {
-  margin: 1.5em 40px; }
-
-/**
-     * Address differences between Firefox and other browsers.
-     */
-hr {
-  box-sizing: content-box;
-  height: 0; }
-
-/**
-     * Contain overflow in all browsers.
-     */
-pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-/* Forms
-       ========================================================================== */
-/**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
-     */
-button,
-input,
-optgroup,
-select,
-textarea {
-  color: inherit;
-  /* 1 */
-  font: inherit;
-  /* 2 */
-  margin: 0;
-  /* 3 */ }
-
-/**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
-     */
-button {
-  overflow: visible; }
-
-/**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
-     */
-button,
-select {
-  text-transform: none; }
-
-/**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
-     */
-button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
-  -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
-
-/**
-     * Re-set default cursor for disabled elements.
-     */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
-
-/**
-     * Remove inner padding and border in Firefox 4+.
-     */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
-
-/**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
-     */
-input {
-  line-height: normal; }
-
-/**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
-     */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
-  height: auto; }
-
-/**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
-     */
-input[type="search"] {
-  -webkit-appearance: textfield;
-  /* 1 */
-  box-sizing: content-box;
-  /* 2 */
-  /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
-       */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
-    -webkit-appearance: none; }
-
-/**
-     * Define consistent border, margin, and padding.
-     */
-fieldset {
-  border: 1px solid #c0c0c0;
-  margin: 0 2px;
-  padding: 0.35em 0.625em 0.75em; }
-
-/**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
-     */
-legend {
-  padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
-
-/**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
-     */
-optgroup {
-  font-weight: bold; }
-
-/* Tables
-       ========================================================================== */
-/**
-     * Remove most spacing between table cells.
-     */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
diff --git a/test/fixtures/variables/support-for/safari7/input.scss b/test/fixtures/variables/support-for/safari7/input.scss
deleted file mode 100644
index e37a003..0000000
--- a/test/fixtures/variables/support-for/safari7/input.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-$support-for: (
-  safari: 7,
-);
-
-@import 'normalize';
-@include normalize();
diff --git a/test/fixtures/variables/support-for/safari7/output.css b/test/fixtures/variables/support-for/safari7/output.css
deleted file mode 100644
index dc28e07..0000000
--- a/test/fixtures/variables/support-for/safari7/output.css
+++ /dev/null
@@ -1,313 +0,0 @@
-/*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */
-/**
-     * 1. Set default font family to sans-serif.
-     * 2. Prevent iOS and IE text size adjust after device orientation change,
-     *    without disabling user zoom.
-     */
-html {
-  font-family: sans-serif;
-  /* 1 */
-  -ms-text-size-adjust: 100%;
-  /* 2 */
-  -webkit-text-size-adjust: 100%;
-  /* 2 */ }
-
-/**
-     * Remove default margin.
-     */
-body {
-  margin: 0; }
-
-/* HTML5 display definitions
-       ========================================================================== */
-/**
-     * Correct `block` display not defined for any HTML5 element in IE 8/9.
-     * Correct `block` display not defined for `details` or `summary` in IE 10/11
-     * and Firefox.
-     * Correct `block` display not defined for `main` in IE 11.
-     */
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section,
-summary {
-  display: block; }
-
-/**
-     * 1. Correct `inline-block` display not defined in IE 8/9.
-     * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
-     */
-audio,
-canvas,
-progress,
-video {
-  vertical-align: baseline;
-  /* 2 */ }
-
-/**
-     * Prevent modern browsers from displaying `audio` without controls.
-     * Remove excess height in iOS 5 devices.
-     */
-audio:not([controls]) {
-  display: none;
-  height: 0; }
-
-/**
-     * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
-     */
-template {
-  display: none; }
-
-/* Links
-       ========================================================================== */
-/**
-     * Improve readability of focused elements when they are also in an
-     * active/hover state.
-     */
-a:active,
-a:hover {
-  outline: 0; }
-
-/* Text-level semantics
-       ========================================================================== */
-/**
-     * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
-     */
-abbr[title] {
-  border-bottom: 1px dotted; }
-
-/**
-     * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
-     */
-b,
-strong {
-  font-weight: bold; }
-
-/**
-     * Address styling not present in Safari and Chrome.
-     */
-dfn {
-  font-style: italic; }
-
-/**
-     * Address variable `h1` font-size and margin within `section` and `article`
-     * contexts in Firefox 4+, Safari, and Chrome.
-     */
-h1 {
-  font-size: 2em;
-  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
-  margin: 0.75em 0; }
-
-/**
-     * Address inconsistent and variable font size in all browsers.
-     */
-small {
-  font-size: 80%; }
-
-/**
-     * Prevent `sub` and `sup` affecting `line-height` in all browsers.
-     */
-sub,
-sup {
-  font-size: 75%;
-  line-height: 0;
-  position: relative;
-  vertical-align: baseline; }
-
-sup {
-  top: -0.5em; }
-
-sub {
-  bottom: -0.25em; }
-
-/* Embedded content
-       ========================================================================== */
-/**
-     * Correct overflow not hidden in IE 9/10/11.
-     */
-svg:not(:root) {
-  overflow: hidden; }
-
-/* Grouping content
-       ========================================================================== */
-/**
-     * Address differences between Firefox and other browsers.
-     */
-hr {
-  box-sizing: content-box;
-  height: 0; }
-
-/**
-     * Contain overflow in all browsers.
-     */
-pre {
-  overflow: auto; }
-
-/**
-     * Address odd `em`-unit font size rendering in all browsers.
-     */
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-/* Forms
-       ========================================================================== */
-/**
-     * Known limitation: by default, Chrome and Safari on OS X allow very limited
-     * styling of `select`, unless a `border` property is set.
-     */
-/**
-     * 1. Correct color not being inherited.
-     *    Known issue: affects color of disabled elements.
-     * 2. Correct font properties not being inherited.
-     * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
-     * 4. Address `font-family` inconsistency between `textarea` and other form in IE 7
-     * 5. Improve appearance and consistency with IE 6/7.
-     */
-button,
-input,
-optgroup,
-select,
-textarea {
-  color: inherit;
-  /* 1 */
-  font: inherit;
-  /* 2 */
-  margin: 0;
-  /* 3 */ }
-
-/**
-     * Address `overflow` set to `hidden` in IE 8/9/10/11.
-     */
-button {
-  overflow: visible; }
-
-/**
-     * Address inconsistent `text-transform` inheritance for `button` and `select`.
-     * All other form control elements do not inherit `text-transform` values.
-     * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
-     * Correct `select` style inheritance in Firefox.
-     */
-button,
-select {
-  text-transform: none; }
-
-/**
-     * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
-     *    and `video` controls.
-     * 2. Correct inability to style clickable `input` types in iOS.
-     * 3. Improve usability and consistency of cursor style between image-type
-     *    `input` and others.
-     * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
-     *    Known issue: inner spacing remains in IE 6.
-     */
-button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
-  -webkit-appearance: button;
-  /* 2 */
-  cursor: pointer;
-  /* 3 */ }
-
-/**
-     * Re-set default cursor for disabled elements.
-     */
-button[disabled],
-html input[disabled] {
-  cursor: default; }
-
-/**
-     * Remove inner padding and border in Firefox 4+.
-     */
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-  border: 0;
-  padding: 0; }
-
-/**
-     * Address Firefox 4+ setting `line-height` on `input` using `!important` in
-     * the UA stylesheet.
-     */
-input {
-  line-height: normal; }
-
-/**
-     * Fix the cursor style for Chrome's increment/decrement buttons. For certain
-     * `font-size` values of the `input`, it causes the cursor style of the
-     * decrement button to change from `default` to `text`.
-     */
-input[type="number"]::-webkit-inner-spin-button,
-input[type="number"]::-webkit-outer-spin-button {
-  height: auto; }
-
-/**
-     * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
-     * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
-     */
-input[type="search"] {
-  -webkit-appearance: textfield;
-  /* 1 */
-  box-sizing: content-box;
-  /* 2 */
-  /**
-       * Remove inner padding and search cancel button in Safari and Chrome on OS X.
-       * Safari (but not Chrome) clips the cancel button when the search input has
-       * padding (and `textfield` appearance).
-       */ }
-  input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration {
-    -webkit-appearance: none; }
-
-/**
-     * Define consistent border, margin, and padding.
-     */
-fieldset {
-  border: 1px solid #c0c0c0;
-  margin: 0 2px;
-  padding: 0.35em 0.625em 0.75em; }
-
-/**
-     * 1. Correct `color` not being inherited in IE 8/9/10/11.
-     * 2. Remove padding so people aren't caught out if they zero out fieldsets.
-     * 3. Correct alignment displayed oddly in IE 6/7.
-     */
-legend {
-  padding: 0;
-  /* 2 */ }
-
-/**
-     * Remove default vertical scrollbar in IE 8/9/10/11.
-     */
-textarea {
-  overflow: auto; }
-
-/**
-     * Don't inherit the `font-weight` (applied by a rule above).
-     * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
-     */
-optgroup {
-  font-weight: bold; }
-
-/* Tables
-       ========================================================================== */
-/**
-     * Remove most spacing between table cells.
-     */
-table {
-  border-collapse: collapse;
-  border-spacing: 0; }
-
-td,
-th {
-  padding: 0; }
diff --git a/test/test_variables.js b/test/test_variables.js
index f54df44..00210f4 100644
--- a/test/test_variables.js
+++ b/test/test_variables.js
@@ -30,12 +30,8 @@ describe('Configuration variables', function() {
   });
 
   describe('$support-for', function() {
-    it('should support Chrome 9', function() {
-      return sassyTest.renderFixture('variables/support-for/chrome9');
-    });
-
-    it('should support Firefox 28', function() {
-      return sassyTest.renderFixture('variables/support-for/firefox28');
+    it('should support Firefox 29', function() {
+      return sassyTest.renderFixture('variables/support-for/firefox29');
     });
 
     it('should support IE 6', function() {
@@ -62,18 +58,6 @@ describe('Configuration variables', function() {
       return sassyTest.renderFixture('variables/support-for/ie11');
     });
 
-    it('should support Safari 5', function() {
-      return sassyTest.renderFixture('variables/support-for/safari5');
-    });
-
-    it('should support Safari 6', function() {
-      return sassyTest.renderFixture('variables/support-for/safari6');
-    });
-
-    it('should support Safari 7', function() {
-      return sassyTest.renderFixture('variables/support-for/safari7');
-    });
-
     it('should support "last X versions" with -X value', function() {
       return sassyTest.renderFixture('variables/support-for/negative-value');
     });