Minor update to the Docs

8 files changed, 78 insertions, 84 deletions

diff --git a/docs/components.html b/docs/components.html
index d5e037d..7089ade 100644
--- a/docs/components.html
+++ b/docs/components.html
@@ -1430,7 +1430,7 @@
             </div>
           </div>
           <div class="notes">
-            <p>Add a container element with the <code>pagination</code> class. And add child elements with the <code>page-item</code> class. The <code>page-item</code> with the <code>active</code> class will be highlighted.</p>
+            <p>Add a container element with the <code>pagination</code> class. And add child elements with the <code>page-item</code> class. The <code>page-item</code> with the <code>active</code> class will be highlighted. You can add the <code>disabled</code> to the <code>page-item</code> to have unclickable page links. </p>
           </div>
 
 <!-- pagination example -->
@@ -2151,9 +2151,7 @@
 
   <footer class="section section-footer bg-gray">
     <div id="copyright" class="grid-footer container grid-960">
-      <p>
-        <a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | Version <span class="version"></span>
-      </p>
+      <p><a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | <a href="https://www.paypal.me/picturepan2" target="_blank">PayPal Donate</a> | Version <span class="version"></span></p>
       <p>Designed and built with ♥ by <a href="https://twitter.com/picturepan2" target="_blank">Yan Zhu</a>. Licensed under the <a href="https://github.com/picturepan2/spectre/blob/master/LICENSE" target="_blank">MIT License</a>.</p>
     </div>
   </footer>
diff --git a/docs/css/docs.css b/docs/css/docs.css
index 3026c45..73aa882 100644
--- a/docs/css/docs.css
+++ b/docs/css/docs.css
@@ -21,7 +21,7 @@
 }
 .section-footer {
   color: #acb3c2;
-  padding: 25px 15px 10px 15px;
+  padding: 26px 15px 10px 15px;
   position: relative;
   z-index: 200;
 }
@@ -86,15 +86,18 @@
   overflow: auto;
 }
 .docs-content {
+  padding-bottom: 50px;
   padding-top: 0;
 }
 .docs-content .container {
   padding: 10px;
 }
-.docs-content header {
+.docs-content .container > h3,
+.docs-content .container > h4 {
   padding-top: 55px;
 }
 .docs-content .anchor {
+  color: #626fca;
   height: 0;
   margin-left: -1em;
   overflow: hidden;
@@ -218,12 +221,12 @@
     padding: 0 5px;
   }
   .docs-sidebar {
-    padding: 70px 10px 50px 10px;
+    padding: 70px 10px 70px 10px;
     position: relative;
   }
   .docs-sidebar .docs-nav {
     bottom: 50px;
-    height: calc(100vh - 120px);
+    height: calc(100vh - 140px);
     overflow-y: auto;
     position: fixed;
     top: 90px;
diff --git a/docs/elements.html b/docs/elements.html
index 41b612e..a196a4c 100644
--- a/docs/elements.html
+++ b/docs/elements.html
@@ -254,11 +254,11 @@
 
       <div class="docs-content column col-sm-12">
         <div id="typography" class="container">
-          <header class="text-center"><h3><a href="#typography" class="anchor" aria-hidden="true">#</a>Typography</h3></header>
+          <h3 class="text-center"><a href="#typography" class="anchor" aria-hidden="true">#</a>Typography</h3>
           <div class="notes">
             <p><strong>Typography</strong> sets default styles for headings, paragraphs, semantic text, blockquote and lists elements.</p>
           </div>
-          <header class="text-center"><h4>Headings</h4></header>
+          <h4 class="text-center">Headings</h4>
           <div class="notes">
             <h1>H1 Title <small class="label">5rem</small></h1>
             <h2>H2 Title <small class="label">4rem</small></h2>
@@ -273,7 +273,7 @@
 &lt;<span class="tag">h2</span>&gt;H2 Title &lt;<span class="tag">small</span> <span class="atn">class</span>=<span class="atv">&quot;label&quot;</span>&gt;4rem&lt;<span class="tag">/small</span>&gt;&lt;<span class="tag">/h2</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Paragraphs</h4></header>
+          <h4 class="text-center">Paragraphs</h4>
           <div class="notes">
             <p>Lorem ipsum dolor sit amet, consectetur <a href="#typography">adipiscing elit. Praesent risus leo, dictum in vehicula sit amet</a>, feugiat tempus tellus. Duis quis sodales risus. Etiam euismod ornare consequat.</p>
             <p>Climb leg rub face on everything give attitude nap all day for under the bed. Chase mice attack feet but rub face on everything hopped up on goofballs.</p>
@@ -283,7 +283,7 @@
 <pre class="code" data-lang="HTML"><code>&lt;<span class="tag">p</span>&gt;Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent risus leo, &lt;<span class="tag">a</span> <span class="atn">href</span>=<span class="atv">&quot;#&quot;</span>&gt;dictum in vehicula sit amet&lt;<span class="tag">/a</span>&gt;, feugiat tempus tellus. Duis quis sodales risus. Etiam euismod ornare consequat.&lt;<span class="tag">/p</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Semantic text elements</h4></header>
+          <h4 class="text-center">Semantic text elements</h4>
           <div class="columns">
             <div class="column col-4 col-xs-12">
               <abbr title="Internationalization">I18N</abbr>
@@ -362,7 +362,7 @@
             </div>
           </div>
 
-          <header class="text-center"><h4>Optimized for east asian fonts</h4></header>
+          <h4 class="text-center">Optimized for east asian fonts</h4>
           <div class="notes">
             <p class="text-large text-center"><span lang="zh-Hans">你好</span>, <span lang="ja">こんにちは</span>, <span lang="ko">안녕하세요</span></p>
             <h5>Chinese (Simplified)</h5>
@@ -397,7 +397,7 @@
 &lt;<span class="tag">p</span> <span class="atn">class</span>=<span class="atv">&quot;cjk&quot;</span>&gt;&lt;<span class="tag">del</span>&gt;祇園&lt;<span class="tag">/del</span>&gt;&lt;<span class="tag">del</span>&gt;精舎&lt;<span class="tag">/del</span>&gt;の鐘の声、諸行無常の響きあり。……&lt;<span class="tag">/p</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Blockquote</h4></header>
+          <h4 class="text-center">Blockquote</h4>
           <blockquote>
             <p>The advance of technology is based on making it fit in so that you don't really even notice it, so it's part of everyday life. </p>
             <cite>- Bill Gates</cite>
@@ -410,7 +410,7 @@
 &lt;<span class="tag">/blockquote</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Lists</h4></header>
+          <h4 class="text-center">Lists</h4>
           <div class="columns">
             <div class="column col-4 col-xs-12">
               <ul class="list">
@@ -474,7 +474,7 @@
         </div>
 
         <div id="tables" class="container">
-          <header class="text-center"><h3><a href="#tables" class="anchor" aria-hidden="true">#</a>Tables</h3></header>
+          <h3 class="text-center"><a href="#tables" class="anchor" aria-hidden="true">#</a>Tables</h3>
           <div class="notes">
             <p><strong>Tables</strong> include default styles for tables and data sets.</p>
           </div>
@@ -536,7 +536,7 @@
         </div>
 
         <div id="buttons" class="container">
-          <header class="text-center"><h3><a href="#buttons" class="anchor" aria-hidden="true">#</a>Buttons</h3></header>
+          <h3 class="text-center"><a href="#buttons" class="anchor" aria-hidden="true">#</a>Buttons</h3>
           <div class="notes">
             <p><strong>Buttons</strong> include simple button styles for actions in different types and sizes. </p>
           </div>
@@ -601,7 +601,7 @@
 &lt;<span class="tag">button</span> <span class="atn">class</span>=<span class="atv">&quot;btn loading&quot;</span>&gt;button&lt;<span class="tag">/button</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Button sizes</h4></header>
+          <h4 class="text-center">Button sizes</h4>
           <div class="columns">
             <div class="column">
               <button class="btn btn-primary btn-lg"><i class="icon icon-arrow-left"></i> large</button>
@@ -649,7 +649,7 @@
 &lt;<span class="tag">button</span> <span class="atn">class</span>=<span class="atv">&quot;btn btn-action circle&quot;</span>&gt;&lt;<span class="tag">i</span> <span class="atn">class</span>=<span class="atv">&quot;icon icon-arrow-left&quot;</span>&gt;&lt;<span class="tag">/i</span>&gt;&lt;<span class="tag">/button</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Button groups</h4></header>
+          <h4 class="text-center">Button groups</h4>
           <div class="columns">
             <div class="column col-xs-12">
               <div class="btn-group">
@@ -697,7 +697,7 @@
         </div>
 
         <div id="forms" class="container">
-          <header class="text-center"><h3><a href="#forms" class="anchor" aria-hidden="true">#</a>Forms</h3></header>
+          <h3 class="text-center"><a href="#forms" class="anchor" aria-hidden="true">#</a>Forms</h3>
           <div class="notes">
             <p><strong>Forms</strong> provide the most common control styles used in forms, including input, textarea, select, checkbox, radio and switch.  </p>
           </div>
@@ -809,7 +809,7 @@
             <p>You can use <code>:indeterminate</code> pseudo class for indeterminate state of checkboxes.</p>
           </div>
 
-          <header class="text-center"><h4>Horizontal forms</h4></header>
+          <h4 class="text-center">Horizontal forms</h4>
           <div class="notes">
             <p>If you want to have a horizontal form, add the <code>form-horizontal</code> class to the &lt;form&gt; container. And add the <code>col-[1-12]</code> class to the child elements for form row layout. </p>
           </div>
@@ -908,7 +908,7 @@
 &lt;<span class="tag">/form</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Form sizes</h4></header>
+          <h4 class="text-center">Form sizes</h4>
           <div class="notes">
             <p>For smaller or larger input and select controls, you could add the <code>input-sm</code>/<code>input-lg</code>, <code>select-sm</code>/<code>select-lg</code> and <code>label-sm</code>/<code>label-lg</code> classes to the elements.</p>
           </div>
@@ -945,7 +945,7 @@
             </div>
           </div>
 
-          <header class="text-center"><h4>Form icons</h4></header>
+          <h4 class="text-center">Form icons</h4>
           <div class="notes">
             <p>Add a wrapper with the <code>has-icon-left</code>/<code>has-icon-right</code> class to &lt;input&gt; element. And add the icon with <code>form-icon</code> class next to the &lt;input&gt;.</p>
           </div>
@@ -1030,7 +1030,7 @@
 &lt;<span class="tag">/div</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Input types</h4></header>
+          <h4 class="text-center">Input types</h4>
           <div class="columns">
             <div class="column col-9 col-sm-12">
               <form class="form-horizontal" action="#forms">
@@ -1110,7 +1110,7 @@
             </div>
           </div>
 
-          <header class="text-center"><h4>Input groups</h4></header>
+          <h4 class="text-center">Input groups</h4>
           <div class="columns">
             <div class="column col-xs-12">
               <div class="input-group">
@@ -1193,7 +1193,7 @@
 &lt;<span class="tag">/div</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Form validation styles</h4></header>
+          <h4 class="text-center">Form validation styles</h4>
           <div class="notes">
             <p>To use form validation styles, add <code>is-success</code> or <code>is-error</code> class to the controls or add <code>has-success</code> or <code>has-error</code> class to parent elements. You can use the <code>form-input-hint</code> class to provide form validation success and error messages.</p>
           </div>
@@ -1292,7 +1292,7 @@
 &lt;<span class="tag">/form</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Form disabled styles</h4></header>
+          <h4 class="text-center">Form disabled styles</h4>
           <div class="notes">
             <p>Add the <code>disabled</code> attribute to the element or &lt;fieldset&gt; for a disabled form components style.</p>
           </div>
@@ -1346,11 +1346,11 @@
         </div>
 
         <div id="icons" class="container">
-          <header class="text-center"><h3><a href="#icons" class="anchor" aria-hidden="true">#</a>Icons <small class="label">experimental</small></h3></header>
+          <h3 class="text-center"><a href="#icons" class="anchor" aria-hidden="true">#</a>Icons <small class="label">experimental</small></h3>
           <div class="notes">
             <p><strong>Icons</strong> are single-element, responsive and pure CSS icons. You can include <code>spectre-icons.css</code> located in the <code>dist</code> folder to your web &lt;head&gt; to have these CSS icons.</p>
           </div>
-          <header class="text-center"><h4>Navigation</h4></header>
+          <h4 class="text-center">Navigation</h4>
           <div class="columns">
             <div class="column col-3 col-md-6">
               <button class="btn btn-primary btn-action btn-lg">
@@ -1431,7 +1431,7 @@
               <p>icon-more-vert</p>
             </div>
           </div>
-          <header class="text-center"><h4>Action</h4></header>
+          <h4 class="text-center">Action</h4>
           <div class="columns">
             <div class="column col-3 col-md-6">
               <button class="btn btn-primary btn-action btn-lg">
@@ -1536,7 +1536,7 @@
               <p>icon-upload</p>
             </div>
           </div>
-          <header class="text-center"><h4>Object</h4></header>
+          <h4 class="text-center">Object</h4>
           <div class="columns">
             <div class="column col-3 col-md-6">
               <button class="btn btn-primary btn-action btn-lg">
@@ -1595,7 +1595,7 @@
         </div>
 
         <div id="labels" class="container">
-          <header class="text-center"><h3><a href="#labels" class="anchor" aria-hidden="true">#</a>Labels</h3></header>
+          <h3 class="text-center"><a href="#labels" class="anchor" aria-hidden="true">#</a>Labels</h3>
           <div class="notes">
             <p><strong>Labels</strong> are formatted text tags for highlighted, informative information.</p>
           </div>
@@ -1620,7 +1620,7 @@
         </div>
 
         <div id="codes" class="container">
-          <header class="text-center"><h3><a href="#codes" class="anchor" aria-hidden="true">#</a>Codes</h3></header>
+          <h3 class="text-center"><a href="#codes" class="anchor" aria-hidden="true">#</a>Codes</h3>
           <div class="notes">
             <p><strong>Codes</strong> are inline and multiline code snippets.</p>
             <p>For inline code, you can use the element <code>&lt;code&gt;</code>. For multiline code snippet blocks, you can use &lt;pre&gt; with the <code>code</code> class as a container, and add &lt;code&gt; inside it. The <code>data-lang</code> attribute is rendered as the language name in the top right.</p>
@@ -1643,11 +1643,11 @@
         </div>
 
         <div id="media" class="container">
-          <header class="text-center"><h3><a href="#media" class="anchor" aria-hidden="true">#</a>Media</h3></header>
+          <h3 class="text-center"><a href="#media" class="anchor" aria-hidden="true">#</a>Media</h3>
           <div class="notes">
             <p><strong>Media</strong> includes responsive images, figures and video classes. </p>
           </div>
-          <header class="text-center"><h4>Images</h4></header>
+          <h4 class="text-center">Images</h4>
           <div class="notes">
             <p>Add the <code>img-responsive</code> class to &lt;img&gt; elements. The images will scale with the parent sizes.</p>
           </div>
@@ -1698,7 +1698,7 @@
 &lt;<span class="tag">/figure</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Video</h4></header>
+          <h4 class="text-center">Video</h4>
           <div class="notes">
             <p>For responsive video, add a container with the <code>video-responsive</code> class. Insert any YouTube, Youku or other iframe/embed video inside the container. The ratio is 16:9 by default. You may add <code>video-responsive-4-3</code> for 4:3 ratio video container or <code>video-responsive-1-1</code> for 1:1 ratio.</p>
           </div>
@@ -1741,9 +1741,7 @@
 
   <footer class="section section-footer bg-gray">
     <div id="copyright" class="grid-footer container grid-960">
-      <p>
-        <a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | Version <span class="version"></span>
-      </p>
+      <p><a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | <a href="https://www.paypal.me/picturepan2" target="_blank">PayPal Donate</a> | Version <span class="version"></span></p>
       <p>Designed and built with ♥ by <a href="https://twitter.com/picturepan2" target="_blank">Yan Zhu</a>. Licensed under the <a href="https://github.com/picturepan2/spectre/blob/master/LICENSE" target="_blank">MIT License</a>.</p>
     </div>
   </footer>
diff --git a/docs/experimentals.html b/docs/experimentals.html
index c67d757..84c9365 100644
--- a/docs/experimentals.html
+++ b/docs/experimentals.html
@@ -255,14 +255,14 @@
 
       <div class="docs-content column col-9 col-sm-12">
         <div id="experimentals" class="container">
-          <header class="text-center"><h3><a href="#experimentals" class="anchor" aria-hidden="true">#</a>Experimentals</h3></header>
+          <h3 class="text-center"><a href="#experimentals" class="anchor" aria-hidden="true">#</a>Experimentals</h3>
           <div class="notes">
             <p>The Experimentals include experimental elements and features, mostly are not yet ready for wide use. These elements and components are limited inside <code>spectre-exp.less</code> before browsers fully support them. Sometimes, there are some specific browsers targeted components.</p>
           </div>
         </div>
 
         <div id="calendars" class="container">
-          <header class="text-center"><h3><a href="#calendars" class="anchor" aria-hidden="true">#</a>Calendars</h3></header>
+          <h3 class="text-center"><a href="#calendars" class="anchor" aria-hidden="true">#</a>Calendars</h3>
           <div class="notes">
             <p><strong>Calendars</strong> are designed for date or date range picker and events display. It is made with flex layout.</p>
           </div>
@@ -330,7 +330,7 @@
             </div>
           </div>
 
-          <header class="text-center"><h4>Calendars large</h4></header>
+          <h4 class="text-center">Calendars large</h4>
           <div class="columns">
             <div class="column col-12">
               <div class="calendar calendar-lg">
@@ -425,7 +425,7 @@
         </div>
 
         <div id="carousels" class="container">
-          <header class="text-center"><h3><a href="#carousels" class="anchor" aria-hidden="true">#</a>Carousels</h3></header>
+          <h3 class="text-center"><a href="#carousels" class="anchor" aria-hidden="true">#</a>Carousels</h3>
           <div class="notes">
             <p><strong>Carousels</strong> are slideshows for cycling images. It is built in pure CSS.</p>
           </div>
@@ -490,7 +490,7 @@
         </div>
 
         <div id="comparison" class="container">
-          <header class="text-center"><h3><a href="#comparison" class="anchor" aria-hidden="true">#</a>Comparison Sliders</h3></header>
+          <h3 class="text-center"><a href="#comparison" class="anchor" aria-hidden="true">#</a>Comparison Sliders</h3>
           <div class="notes">
             <p><strong>Comparison Sliders</strong> are sliders for comparing two images. It is built in pure CSS.</p>
           </div>
@@ -528,7 +528,7 @@
         </div>
 
         <div id="filters" class="container">
-          <header class="text-center"><h3><a href="#filters" class="anchor" aria-hidden="true">#</a>Filters</h3></header>
+          <h3 class="text-center"><a href="#filters" class="anchor" aria-hidden="true">#</a>Filters</h3>
           <div class="notes">
             <p><strong>Filters</strong> are CSS only content filters.</p>
           </div>
@@ -653,7 +653,7 @@
         </div>
 
         <div id="meters" class="container">
-          <header class="text-center"><h3><a href="#meters" class="anchor" aria-hidden="true">#</a>Meters</h3></header>
+          <h3 class="text-center"><a href="#meters" class="anchor" aria-hidden="true">#</a>Meters</h3>
           <div class="notes">
             <p><strong>Meters</strong> represent the value within the known range.</p>
           </div>
@@ -688,7 +688,7 @@
         </div>
 
         <div id="parallax" class="container">
-          <header class="text-center"><h3><a href="#parallax" class="anchor" aria-hidden="true">#</a>Parallax</h3></header>
+          <h3 class="text-center"><a href="#parallax" class="anchor" aria-hidden="true">#</a>Parallax</h3>
           <div class="notes">
             <p>The <strong>Parallax</strong> acts like Apple TV/tvOS hover parallax effect. It is built in pure CSS.</p>
           </div>
@@ -731,7 +731,7 @@
         </div>
 
         <div id="progress" class="container">
-          <header class="text-center"><h3><a href="#progress" class="anchor" aria-hidden="true">#</a>Progress</h3></header>
+          <h3 class="text-center"><a href="#progress" class="anchor" aria-hidden="true">#</a>Progress</h3>
           <div class="notes">
             <p>The <strong>Progress</strong> indicates the progress completion of a task.</p>
           </div>
@@ -758,7 +758,7 @@
         </div>
 
         <div id="sliders" class="container">
-          <header class="text-center"><h3><a href="#sliders" class="anchor" aria-hidden="true">#</a>Sliders</h3></header>
+          <h3 class="text-center"><a href="#sliders" class="anchor" aria-hidden="true">#</a>Sliders</h3>
           <div class="notes">
             <p><strong>Sliders</strong> are for selecting values from ranges.</p>
           </div>
@@ -778,7 +778,7 @@
         </div>
 
         <div id="timelines" class="container">
-          <header class="text-center"><h3><a href="#timelines" class="anchor" aria-hidden="true">#</a>Timelines</h3></header>
+          <h3 class="text-center"><a href="#timelines" class="anchor" aria-hidden="true">#</a>Timelines</h3>
           <div class="notes">
             <p><strong>Timelines</strong> are ordered sequences of activities.</p>
           </div>
@@ -888,9 +888,7 @@
 
   <footer class="section section-footer bg-gray">
     <div id="copyright" class="grid-footer container grid-960">
-      <p>
-        <a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | Version <span class="version"></span>
-      </p>
+      <p><a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | <a href="https://www.paypal.me/picturepan2" target="_blank">PayPal Donate</a> | Version <span class="version"></span></p>
       <p>Designed and built with ♥ by <a href="https://twitter.com/picturepan2" target="_blank">Yan Zhu</a>. Licensed under the <a href="https://github.com/picturepan2/spectre/blob/master/LICENSE" target="_blank">MIT License</a>.</p>
     </div>
   </footer>
diff --git a/docs/index.html b/docs/index.html
index 11da7d6..cc806a2 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -593,9 +593,7 @@
 
   <footer class="section section-footer bg-gray">
     <div id="copyright" class="grid-footer container grid-960">
-      <p>
-        <a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | Version <span class="version"></span>
-      </p>
+      <p><a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | <a href="https://www.paypal.me/picturepan2" target="_blank">PayPal Donate</a> | Version <span class="version"></span></p>
       <p>Designed and built with ♥ by <a href="https://twitter.com/picturepan2" target="_blank">Yan Zhu</a>. Licensed under the <a href="https://github.com/picturepan2/spectre/blob/master/LICENSE" target="_blank">MIT License</a>.</p>
     </div>
   </footer>
diff --git a/docs/layout.html b/docs/layout.html
index c90809a..1b224b5 100644
--- a/docs/layout.html
+++ b/docs/layout.html
@@ -254,7 +254,7 @@
 
       <div class="docs-content column col-sm-12">
         <div id="grid" class="container">
-          <header class="text-center"><h3><a href="#grid" class="anchor" aria-hidden="true">#</a>Flexbox grid</h3></header>
+          <h3 class="text-center"><a href="#grid" class="anchor" aria-hidden="true">#</a>Flexbox grid</h3>
           <div class="notes">
             <p><strong>Layout</strong> includes flexbox based responsive grid system with 12 columns. </p>
           </div>
@@ -364,7 +364,7 @@
         </div>
 
         <div id="responsive" class="container">
-          <header class="text-center"><h3><a href="#responsive" class="anchor" aria-hidden="true">#</a>Responsive grid</h3></header>
+          <h3 class="text-center"><a href="#responsive" class="anchor" aria-hidden="true">#</a>Responsive grid</h3>
           <div class="notes">
             <p>Spectre provides a neat responsive layout grid system and responsive visibility utilities. </p>
           </div>
@@ -410,7 +410,7 @@
 &lt;<span class="tag">/div</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Responsive container</h4></header>
+          <h4 class="text-center">Responsive container</h4>
           <div class="notes">
             <p>The responsive layout also provides fixed-width containers. Use <code>grid-480</code>, <code>grid-960</code> or <code>grid-1280</code> to <code>container</code> for a fixed-width container with the specific max-width.</p>
           </div>
@@ -423,7 +423,7 @@
 &lt;<span class="tag">/div</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Responsive visibility</h4></header>
+          <h4 class="text-center">Responsive visibility</h4>
           <div class="notes">
             <p>The responsive visibility utilities help show and hide elements on specific viewport sizes. </p>
           </div>
@@ -563,7 +563,7 @@
         </div>
 
         <div id="navbar" class="container">
-          <header class="text-center"><h3><a href="#navbar" class="anchor" aria-hidden="true">#</a>Navbar</h3></header>
+          <h3 class="text-center"><a href="#navbar" class="anchor" aria-hidden="true">#</a>Navbar</h3>
           <div class="notes">
             <p><strong>Navbar</strong> is a layout container that appears in the header of apps and websites. </p>
           </div>
@@ -644,7 +644,7 @@
         </div>
 
         <div id="panels" class="container">
-          <header class="text-center"><h3><a href="#panels" class="anchor" aria-hidden="true">#</a>Panels</h3></header>
+          <h3 class="text-center"><a href="#panels" class="anchor" aria-hidden="true">#</a>Panels</h3>
           <div class="notes">
             <p><strong>Panels</strong> are flexible view container layout with auto-expand content section.</p>
           </div>
@@ -805,7 +805,7 @@
         </div>
 
         <div id="empty" class="container">
-          <header class="text-center"><h3><a href="#empty" class="anchor" aria-hidden="true">#</a>Empty states / blank slates</h3></header>
+          <h3 class="text-center"><a href="#empty" class="anchor" aria-hidden="true">#</a>Empty states / blank slates</h3>
           <div class="notes">
             <p><strong>Empty states/blank slates</strong> are commonly used as placeholders for first time use, empty data and error screens.</p>
           </div>
@@ -894,9 +894,7 @@
 
   <footer class="section section-footer bg-gray">
     <div id="copyright" class="grid-footer container grid-960">
-      <p>
-        <a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | Version <span class="version"></span>
-      </p>
+      <p><a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | <a href="https://www.paypal.me/picturepan2" target="_blank">PayPal Donate</a> | Version <span class="version"></span></p>
       <p>Designed and built with ♥ by <a href="https://twitter.com/picturepan2" target="_blank">Yan Zhu</a>. Licensed under the <a href="https://github.com/picturepan2/spectre/blob/master/LICENSE" target="_blank">MIT License</a>.</p>
     </div>
   </footer>
diff --git a/docs/src/docs.less b/docs/src/docs.less
index c7217db..c01aba3 100644
--- a/docs/src/docs.less
+++ b/docs/src/docs.less
@@ -26,7 +26,7 @@
 
 .section-footer {
   color: @gray-color;
-  padding: 25px 15px 10px 15px;
+  padding: 26px 15px 10px 15px;
   position: relative;
   z-index: 200;
 
@@ -107,17 +107,20 @@
 }
 
 .docs-content {
+  padding-bottom: 50px;
   padding-top: 0;
 
   .container {
     padding: 10px;
-  }
 
-  header {
-    padding-top: 55px;
+    & > h3,
+    & > h4 {
+      padding-top: 55px;
+    }
   }
 
   .anchor {
+    color: @primary-color-light;
     height: 0;
     margin-left: -1em;
     overflow: hidden;
@@ -270,12 +273,12 @@
   }
 
   .docs-sidebar {
-    padding: 70px 10px 50px 10px;
+    padding: 70px 10px 70px 10px;
     position: relative;
 
     .docs-nav {
       bottom: 50px;
-      height: ~"calc(100vh - 120px)";
+      height: ~"calc(100vh - 140px)";
       overflow-y: auto; 
       position: fixed;
       top: 90px;
diff --git a/docs/utilities.html b/docs/utilities.html
index d88aea8..943f4bc 100644
--- a/docs/utilities.html
+++ b/docs/utilities.html
@@ -254,11 +254,11 @@
 
       <div class="docs-content column col-sm-12">
         <div id="colors" class="container">
-          <header class="text-center"><h3><a href="#colors" class="anchor" aria-hidden="true">#</a>Color utilities</h3></header>
+          <h3 class="text-center"><a href="#colors" class="anchor" aria-hidden="true">#</a>Color utilities</h3>
           <div class="notes">
             <p><strong>Color utilities</strong> are used for changing colors for text, link and background.</p>
           </div>
-          <header class="text-center"><h4>Text colors</h4></header>
+          <h4 class="text-center">Text colors</h4>
           <div class="notes">
             <p>
               <span class="text-primary p-5">primary color</span>
@@ -303,7 +303,7 @@
 &lt;<span class="tag">a</span> <span class="atn">class</span>=<span class="atv">&quot;text-error&quot;</span> <span class="atn">href</span>=<span class="atv">&quot;#&quot;</span>&gt;error color&lt;<span class="tag">/a</span>&gt;
 </code></pre>
 
-          <header class="text-center"><h4>Background colors</h4></header>
+          <h4 class="text-center">Background colors</h4>
           <div class="notes">
             <p>
               <span class="bg-primary text-light p-5 rounded">primary bg</span>
@@ -329,7 +329,7 @@
         </div>
 
         <div id="display" class="container">
-          <header class="text-center"><h3><a href="#display" class="anchor" aria-hidden="true">#</a>Display utilities</h3></header>
+          <h3 class="text-center"><a href="#display" class="anchor" aria-hidden="true">#</a>Display utilities</h3>
           <div class="notes">
             <p><strong>Display utilities</strong> are used for display and hidden things.</p>
           </div>
@@ -360,7 +360,7 @@
         </div>
 
         <div id="divider" class="container">
-          <header class="text-center"><h3><a href="#divider" class="anchor" aria-hidden="true">#</a>Divider</h3></header>
+          <h3 class="text-center"><a href="#divider" class="anchor" aria-hidden="true">#</a>Divider</h3>
           <div class="notes">
             <p>A <strong>Divider</strong> is used for separating elements.</p>
           </div>
@@ -432,7 +432,7 @@
         </div>
 
         <div id="loading" class="container">
-          <header class="text-center"><h3><a href="#loading" class="anchor" aria-hidden="true">#</a>Loading</h3></header>
+          <h3 class="text-center"><a href="#loading" class="anchor" aria-hidden="true">#</a>Loading</h3>
           <div class="notes">
             <p><strong>Loading indicator</strong> is used for loading or updating. Also, you can add the <code>loading</code> class to buttons for loading status.</p>
           </div>
@@ -450,7 +450,7 @@
         </div>
 
         <div id="position" class="container">
-          <header class="text-center"><h3><a href="#position" class="anchor" aria-hidden="true">#</a>Position utilities</h3></header>
+          <h3 class="text-center"><a href="#position" class="anchor" aria-hidden="true">#</a>Position utilities</h3>
           <div class="notes">
             <p><strong>Position utilities</strong> are used for useful layout and position things, including clearfix, float, position and margin/padding utilities.</p>
           </div>
@@ -484,7 +484,7 @@
         </div>
 
         <div id="shapes" class="container">
-          <header class="text-center"><h3><a href="#shapes" class="anchor" aria-hidden="true">#</a>Shape utilities</h3></header>
+          <h3 class="text-center"><a href="#shapes" class="anchor" aria-hidden="true">#</a>Shape utilities</h3>
           <div class="notes">
             <p><strong>Shape utilities</strong> are used for change element shapes.</p>
           </div>
@@ -499,7 +499,7 @@
         </div>
 
         <div id="text" class="container">
-          <header class="text-center"><h3><a href="#text" class="anchor" aria-hidden="true">#</a>Text utilities</h3></header>
+          <h3 class="text-center"><a href="#text" class="anchor" aria-hidden="true">#</a>Text utilities</h3>
           <div class="notes">
             <p><strong>Text utilities</strong> are used for text alignment, styles and overflow things.</p>
           </div>
@@ -563,9 +563,7 @@
 
   <footer class="section section-footer bg-gray">
     <div id="copyright" class="grid-footer container grid-960">
-      <p>
-        <a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | Version <span class="version"></span>
-      </p>
+      <p><a href="index.html#introduction" target="_blank">Documents</a> | <a href="https://github.com/picturepan2/spectre" target="_blank">GitHub Repo</a> | <a href="https://twitter.com/spectrecss" target="_blank">Twitter</a> | <a href="https://www.paypal.me/picturepan2" target="_blank">PayPal Donate</a> | Version <span class="version"></span></p>
       <p>Designed and built with ♥ by <a href="https://twitter.com/picturepan2" target="_blank">Yan Zhu</a>. Licensed under the <a href="https://github.com/picturepan2/spectre/blob/master/LICENSE" target="_blank">MIT License</a>.</p>
     </div>
   </footer>