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<path d="M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3a2 2 0 0 1 2-2h1V.5a.5.5 0 0 1 .5-.5zM1 4v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V4H1z"/>
</svg>
February 21, 2018
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</div>
<p>Just over a month ago, we shipped the long awaited Bootstrap 4 stable release. With a brand new codebase designed to better support customization with all new components and documentation, it was the perfect time to debut some brand new themes built. Today, we’d like to introduce you to our brand new <a href="https://themes.getbootstrap.com/">Bootstrap Themes marketplace</a>.</p>
<h2 id="10-new-themes">10 new themes</h2>
<p><a href="https://themes.getbootstrap.com/"><img src="/assets/img/2018/02/themes-grid.png" class="d-block img-fluid mb-2 rounded border" alt="Bootstrap themes grid" loading="lazy" width="1250" height="1372">
</a></p>
<p>Over the last several months, we’ve been hard at work with theme creators to build the best themes for you. When we created our original three Bootstrap themes, our goal was to provide the best themes, build tools, documentation, and support to everyone building with Bootstrap. With today’s update, we’re adding 10 new themes to the mix from a global community of designers and developers.</p>
<p>Every theme is built on Bootstrap 4 (stable, no beta or alpha here!) and comes with its own build tools and customer support. Prices are set by creators with pricing that incentivizes unique and well supported themes. Collectively, this inaugural batch of theme developers have built themes used by over 500,000 people. We’re excited to grow our Themes user base, push the boundaries of premium themes, and help everyone bring their ideas to life on the web.</p>
<p><a href="https://themes.getbootstrap.com/">Explore Bootstrap Themes »</a></p>
<h2 id="sell-your-themes">Sell your themes</h2>
<p>Our <a href="https://themes.getbootstrap.com/">new marketplace</a> isn’t just for buying themes. If you’re a theme creator, we’d love to work with you to include your themes or to build new exclusive themes. We’re looking for new creators to design and build high quality themes, provide first class documentation and support, and help create unique experiences built on Bootstrap.</p>
<p>Learn more at <a href="https://themes.getbootstrap.com/sell/">https://themes.getbootstrap.com/sell/</a>>.</p>
<p>Happy theming,<br>
<a href="https://twitter.com/mdo">@mdo</a>, <a href="https://twitter.com/dhg">@dhg</a>, & <a href="https://twitter.com/fat">@fat</a></p>
</div><div class="post">
<h1 class="post-title fw-600">
<a href="/2018/01/18/bootstrap-4/" class="text-decoration-none">
Bootstrap 4
</a>
</h1>
<div class="d-flex align-items-center mb-4 text-muted author-info">
<a class="d-flex align-items-center text-muted text-decoration-none" href="https://github.com/mdo" target="_blank" rel="noopener">
<img class="mb-0 me-2 rounded-2" srcset="https://github.com/mdo.png?size=32, https://github.com/mdo.png?size=64 2x"
src="https://github.com/mdo.png?size=32"
alt="" width="32" height="32" loading="lazy">
<span>@mdo</span>
</a>
<span class="d-flex align-items-center ms-3" title="18 Jan 18 00:00 UTC">
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<path d="M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3a2 2 0 0 1 2-2h1V.5a.5.5 0 0 1 .5-.5zM1 4v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V4H1z"/>
</svg>
January 18, 2018
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<p>It’s literally taken us years to do it, but Bootstrap 4 has finally arrived! Words cannot begin to describe the elation the entire team and I have for this release, but I’ll do my best. Thank you to everyone, especially to the team, and to everyone who’s contributed code in a pull request or opened an issue. <strong>Thank you.</strong></p>
<p>Since our last beta, we’ve been hard at work stabilizing a few key pieces of our CSS, polishing our documentation, adding some extra surprises, and planning for our follow-up releases. We still have some kinks to iron out, but nothing’s going to stop us from shipping a stable release.</p>
<p><strong>Anxious to jump right in? <a href="https://getbootstrap.com/">Head over to our documentation site</a> and explore.</strong> Be sure to check out our <a href="https://getbootstrap.com/docs/4.0/examples/">new Examples</a> and the <a href="https://getbootstrap.com/docs/4.0/migration/">migration docs page</a>!</p>
<p>Want to know more before hitting the docs? Great, let’s dive in!</p>
<h2 id="whats-new">What’s new</h2>
<p>There are no breaking changes since our last beta, but we have made some key improvements and resolved some tricky bugs.</p>
<ul>
<li>
<p>Print styles and utility classes have been updated. We’ve improved how printed pages are rendered to ensure pages are reasonably sized instead of rendering them as mobile devices. Print display utilities also include a whole slew of new <code>display</code> values to match our standard display utilities.</p>
</li>
<li>
<p>Additive border utilities have been added (e.g., <code>.border-top</code>) and default to a solid 1px light gray border. Now it’s easier to quickly add all borders or a subset of borders to your components.</p>
</li>
<li>
<p>Our <code>$spacers</code> and <code>$sizes</code> Sass maps have been updated to allow more customization the same way our color maps work. You can now add, remove, or replace all your key-value pairs consistently across our CSS. <a href="https://getbootstrap.com/docs/4.0/getting-started/theming/">Head to our Theming docs</a> for more information and examples.</p>
</li>
<li>
<p>Added documentation to our Theming docs for using our provided <a href="https://getbootstrap.com/docs/4.0/getting-started/theming/#css-variables">CSS variables</a> for those are living on the edge and don’t want to use Sass.</p>
</li>
<li>
<p>Added responsive <code>.order-0</code> and <code>.order-last</code> classes for more control over the flexbox grid.</p>
</li>
</ul>
<p>In addition, we’ve made plenty of improvements to reusing and extending variables and general code cleanup. But, that’s still not everything.</p>
<h2 id="new-examples">New examples</h2>
<p>Nearly every example has been overhauled for our stable v4 release. We’ve removed a couple outdated examples, added brand new ones, and really overhauled a few others.</p>
<p><a href="https://getbootstrap.com/docs/4.0/examples/"><img src="/assets/img/2018/01/examples.png" class="d-block img-fluid mb-2 rounded border" alt="Bootstrap examples" loading="lazy" width="1200" height="600">
</a></p>
<p>Here’s the rundown of changes to each:</p>
<ul>
<li>
<p>You’ve likely already seen our <a href="https://getbootstrap.com/docs/4.0/examples/album/">Album example</a>, but it’s been updated for this release to include more content in our photo cards and improved mobile rendering.</p>
</li>
<li>
<p><a href="https://getbootstrap.com/docs/4.0/examples/pricing/">Pricing</a> is brand new with this release and is a fully custom page built with our utilities and card components. It’s responsive and easily extended.</p>
</li>
<li>
<p><a href="https://getbootstrap.com/docs/4.0/examples/checkout/">Checkout</a> is a brand new, extensive form example featuring all the best parts of our form layouts, validation styles, grid, and more.</p>
</li>
<li>
<p><a href="https://getbootstrap.com/docs/4.0/examples/product/">Product</a> is also new and is a cheeky riff on Apple-style marketing pages, largely built with only our utility classes. Don’t take it too seriously!</p>
</li>
<li>
<p><a href="https://getbootstrap.com/docs/4.0/examples/blog/">Blog</a> has been rewritten from the ground up. Gone is the two column blue header layout. We’ve built a snarky magazine-style layout with featured posts and responsive navigation.</p>
</li>
<li>
<p><a href="https://getbootstrap.com/docs/4.0/examples/dashboard/">Dashboard</a> has been overhauled as well to feature a live ChartJS example, includes a refreshed sidebar with <a href="https://feathericons.com/">Feather icons</a>, and is semi-responsive.</p>
</li>
<li>
<p><a href="https://getbootstrap.com/docs/4.0/examples/floating-labels/">Floating labels</a> is brand new and builds on our sign-in example to provide a CSS-only implementation of the floating input label. This one’s experimental and may see major changes before we bring it to Bootstrap proper.</p>
</li>
<li>
<p>Finally, <a href="https://getbootstrap.com/docs/4.0/examples/offcanvas/">Offcanvas</a> has been rewritten from the ground up to show off a navbar-built drawer, horizontal scrolling navigation, and some custom lists built on <a href="https://getbootstrap.com/docs/4.0/layout/media-object/">media object</a> and utilities.</p>
</li>
</ul>
<p><a href="https://getbootstrap.com/docs/4.0/examples/cover/">Cover</a>, <a href="https://getbootstrap.com/docs/4.0/examples/carousel/">Carousel</a>, <a href="https://getbootstrap.com/docs/4.0/examples/sign-in/">Sign-in</a>, and our <a href="https://getbootstrap.com/docs/4.0/examples/#framework">framework examples</a> only saw minor updates to improve code quality and fix a few smaller bugs. Overall this was a huge update for our examples and I’m excited to iterate on these and add more in future releases.</p>
<h2 id="documenting-our-approach">Documenting our approach</h2>
<p>New with v4 stable is a brief overview of some of the guiding principles behind why we do the things we do in Bootstrap. Our intent is to distill and document all the things we keep in our heads while writing code, building linters, and debugging. Much of this is focused on concepts and strategies for writing responsive CSS, using simple selectors, and limiting how much JavaScript one needs to write.</p>
<p><a href="https://getbootstrap.com/docs/4.0/extend/approach/">Check out the new Approach page</a>, and be sure to open an issue or pull request with feedback and suggestions on what else to cover.</p>
<h2 id="known-issues">Known issues</h2>
<p>No release fixes every bug, and the same can be said for our v4 stable release. Here’s some of the things that we’re looking to tackle first in either a minor release (v4.1) or a patch release (v4.0.1) as time and scope allow.</p>
<ul>
<li>
<p><a href="https://github.com/twbs/bootstrap/issues/25110">Input groups, validation, and rounded corners.</a> I rewrote this for Beta 3 and I thought nailed it, but I was mistaken. We have some rounded corner issues and the only way we can fix them with CSS without breaking backward compatibility is by limiting how extensible the component can be made. We may need a modifier class to avoid some gnarly CSS and satisfy all the key functionality. Check out the issue and cross-linked PR for more details.</p>
</li>
<li>
<p>Table variants, in particular <code>.table-active</code>, have a weird selector we’ve unintentionally left linger since prior releases. The bug results in <a href="https://github.com/twbs/bootstrap/issues/24529">double application of an <code>rgba()</code> background color</a>—once for the <code><tr></code> and once for any <code><td></code>/<code><th></code> elements within.</p>
</li>
</ul>
<p>There are a few more issues not yet confirmed or slated for our first patch release, but expect a handful of fixes coming your way before we hit the next minor release. We’ll likely also package up the default branch change for our repository in this next patch release. We didn’t have time to fit in testing a merge of a hugely divergent code base without nuking the entire Git history of v3. Again, more on that soon.</p>
<h2 id="next-releases">Next releases</h2>
<p>Speaking of releases, we’re excited about the momentum we have going for us. Our <a href="https://github.com/twbs/bootstrap/projects">GitHub project boards</a> are mostly up to date on upcoming releases, so feel free to jump in and take a look. Our next release will be v4.1 (pending any bugfix patches) and will focus on a slew of small new features, utilities, responsive font sizes, and more. From there we have a couple more minor releases that rally around another group of features.</p>
<p>We aim to make RTL part of an upcoming minor release depending on overall scope. It’s taken us far too long to commit to this, but we’re on it. Our current plan is focused on implementing this into our build tools and components so you conditionally serve, for example, <code>bootstrap.min.css</code> or <code>bootstrap-rtl.min.css</code>. Weigh in on the open issue please with any feedback; when we’re ready, we’ll tee up a fresh pull request with help from the community.</p>
<p>It’s worth reiterating that each minor release will bring a new hosted version of our documentation. Right now, we have <code>getbootstrap.com/docs/4.0/</code> and come v4.1’s release, we’ll have that plus <code>getbootstrap.com/docs/4.1/</code>. Prior releases will continue to be linked from our navigation as is already the case for v3.x and the last v4 alpha.</p>
<h2 id="themes-update">Themes update</h2>
<p><a href="https://themes.getbootstrap.com/">Bootstrap Themes</a> are getting a major update this year! We’ve been absolutely thrilled with the response since we originally launched Bootstrap Themes and we’re finally ready to share our plans for what’s next.</p>
<p>For the past few months, we’ve been working with some amazing theme creators to bring their awesome work to the Official Bootstrap Themes store. We couldn’t be more excited to announce we’re expanding Bootstrap Themes to include ten brand new themes. We’re currently targeting a first quarter launch with themes all built on Bootstrap 4 (sorry, no v3 for these). Depending on final reviews, we might even get them to y’all in the coming weeks.</p>
<p>So much of Bootstrap’s reach and usefulness comes directly from designers, developers, and creators all over the world building businesses with and on top of Bootstrap. We want to use our platform to give these creators an even larger audience and provide y’all with the best Bootstrap team-approved themes.</p>
<p>Stay tuned for more information as we get ready to launch.</p>
<h2 id="thank-you">Thank you</h2>
<p>Finally, one last thank you to everyone who’s contributed to Bootstrap 4. It’s been a crazy journey and I’m personally relieved, thrilled, and anxious to call it stable. There have been roughly 6,000 commits to v4 since we first starting working on it back in 2015. We’ve gone every which direction and rewrote far too many things far too many times, but I’m so very happy and fortunate with where we landed.</p>
<p>Cheers once again to everyone who’s contributed to and built with Bootstrap. It’s an honor to be building these kind of tools alongside and for all of you.</p>
</div><div class="post">
<h1 class="post-title fw-600">
<a href="/2017/12/28/bootstrap-4-beta-3/" class="text-decoration-none">
Bootstrap 4 Beta 3
</a>
</h1>
<div class="d-flex align-items-center mb-4 text-muted author-info">
<a class="d-flex align-items-center text-muted text-decoration-none" href="https://github.com/mdo" target="_blank" rel="noopener">
<img class="mb-0 me-2 rounded-2" srcset="https://github.com/mdo.png?size=32, https://github.com/mdo.png?size=64 2x"
src="https://github.com/mdo.png?size=32"
alt="" width="32" height="32" loading="lazy">
<span>@mdo</span>
</a>
<span class="d-flex align-items-center ms-3" title="28 Dec 17 00:00 UTC">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" class="me-2" viewBox="0 0 16 16" role="img" fill="currentColor">
<path d="M11 6.5a.5.5 0 0 1 .5-.5h1a.5.5 0 0 1 .5.5v1a.5.5 0 0 1-.5.5h-1a.5.5 0 0 1-.5-.5v-1z"/>
<path d="M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3a2 2 0 0 1 2-2h1V.5a.5.5 0 0 1 .5-.5zM1 4v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V4H1z"/>
</svg>
December 28, 2017
</span>
</div>
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</div>
<p>Welcome to the final beta of v4! It’s been over two months since we shipped our second beta and we’ve been busy making the last breaking changes before moving to our next stable release, v4.0.0! We have a few more breaking changes than we were planning, but fret not, we’ve detailed them all.</p>
<p>Beta 3 primarily focuses around our forms, but it also includes key fixes to tables, some global styles, our documentation, and some JavaScript bugs. Following this release, we’ll <a href="https://github.com/twbs/bootstrap/projects/12">address a few issues and PRs</a> before doing a stable v4 release a week or two into the New Year.</p>
<p>Let’s dive into all the highlights.</p>
<h2 id="breaking-changes">Breaking changes</h2>
<p>As mentioned in <a href="/2017/10/19/bootstrap-4-beta-2/">our Beta 2 release</a>, we needed to make a few more breaking changes in Beta 3. We’ve summarized them here and in our <a href="https://getbootstrap.com/docs/4.0/migration/#beta-3-changes">migration docs</a>—be sure to read them!</p>
<ul>
<li>
<p><strong>Rewrote native and custom check controls.</strong> Both browser default and custom checkboxes and radios now have simpler markup after removing the <code><input></code> from the <code><label></code>. Now, all checkboxes and radios have a parent <code><div></code> and sibling <code><input></code> and <code><label></code> pair. This is essential for form validation and disabled inputs because we can use the input’s state to style the label.</p>
<p>In addition, custom checkbox and radio elements no longer have a <code>.custom-control-indicator</code>. This is generated from the new <code>.custom-control-label</code>.</p>
</li>
<li>
<p><strong>Input groups were rewritten</strong> with specific <code>.input-group-{prepend|append}</code> classes. The new approach allows us to support validation styles and messages within input groups, while also adding support for custom selects, custom file inputs, and multiple <code>.form-control</code>s.</p>
</li>
<li>
<p><strong>Responsive tables are once again parent classes</strong> to avoid accessiblity issues with changing a <code><table></code>’s <code>display</code>.</p>
</li>
<li>
<p><strong>Deleted the <code>.col-form-legend</code> class</strong>, consolidating it’s styles into the <code>.col-form-label</code> class.</p>
</li>
</ul>
<p>Read the <a href="https://getbootstrap.com/docs/4.0/migration/#beta-3-changes">Migration page</a> for further details.</p>
<h2 id="more-highlights">More highlights</h2>
<p>In addition to the breaking changes, we’ve addressed a few more general issues that may impact your project.</p>
<ul>
<li>
<p>Restored <code>cursor: pointer</code> to non-disabled links, buttons, <code>.close</code>, navbar toggler, and pagination links.</p>
</li>
<li>
<p>Added a new vertically centered modal option with <code>.modal-dialog-centered</code>.</p>
</li>
<li>
<p>Added new dropleft and dropright variants for dropdowns in #23860.</p>
</li>
<li>
<p>Our npm package no longer includes any files other than our source and dist JavaScript and CSS files. If you previously relied on our running our scripts via the <code>node_modules</code> folder, you’ll need to update your build tools.</p>
</li>
<li>
<p>Print styles have moved to bottom of the import stack to properly override styles.</p>
</li>
</ul>
<p>For more details on this release’s changes, take a look at the <a href="https://github.com/twbs/bootstrap/issues/24439">Beta 3 ship list issue</a>, as well as the <a href="https://github.com/twbs/bootstrap/projects/10">Beta 3 project</a>. Be sure to <a href="https://bootstrap-slack.herokuapp.com">join our official Slack room!</a> and dive into <a href="https://github.com/twbs/bootstrap/issues/">our issue tracker</a> with bug reports, questions, and specific feedback whenever possible.</p>
<h2 id="coming-up">Coming up</h2>
<p>Stable v4.0.0 is our next release and we already have a <a href="https://github.com/twbs/bootstrap/projects/12">GitHub project board</a> to track issues and PRs. There will be no breaking changes from Beta 3 to stable, so our changelog should be short and sweet. Expect some linting, Sass variable improvements, updated docs Examples, and more build tool improvements.</p>
<p>With our next release, the <code>master</code> branch will once again become our default branch. We’ll merge <code>v4-dev</code> into <code>master</code>, meaning v3’s source code will only be in our <code>v3-dev</code> branch and <a href="https://github.com/twbs/bootstrap/releases">past releases</a>.</p>
<p>See you again real soon!</p>
</div><div class="post">
<h1 class="post-title fw-600">
<a href="/2017/10/19/bootstrap-4-beta-2/" class="text-decoration-none">
Bootstrap 4 Beta 2
</a>
</h1>
<div class="d-flex align-items-center mb-4 text-muted author-info">
<a class="d-flex align-items-center text-muted text-decoration-none" href="https://github.com/mdo" target="_blank" rel="noopener">
<img class="mb-0 me-2 rounded-2" srcset="https://github.com/mdo.png?size=32, https://github.com/mdo.png?size=64 2x"
src="https://github.com/mdo.png?size=32"
alt="" width="32" height="32" loading="lazy">
<span>@mdo</span>
</a>
<span class="d-flex align-items-center ms-3" title="19 Oct 17 00:00 UTC">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" class="me-2" viewBox="0 0 16 16" role="img" fill="currentColor">
<path d="M11 6.5a.5.5 0 0 1 .5-.5h1a.5.5 0 0 1 .5.5v1a.5.5 0 0 1-.5.5h-1a.5.5 0 0 1-.5-.5v-1z"/>
<path d="M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3a2 2 0 0 1 2-2h1V.5a.5.5 0 0 1 .5-.5zM1 4v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V4H1z"/>
</svg>
October 19, 2017
</span>
</div>
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</div>
<p>Just over two months ago we shipped our first beta for Bootstrap 4, and now we’re ready to share our second with you. We’ve improved customization, documentation, build tooling, and naming inconsistencies all while fixing hella bugs.</p>
<p>We’ve done our best to prevent breaking changes, but we had to sneak some in. Regrettably, we’ll also have a few more coming in Beta 3, too. However, we’re clearly outlining all of them for you to make the upgrade and testing process as easy as possible.</p>
<p>Let’s start with the good news though—Beta 2 is here!</p>
<h2 id="highlights">Highlights</h2>
<p>We’ve pushed over 500 commits in our two months, so we have a few changes since Beta 1 to highlights to share with you.</p>
<h3 id="improved-theming">Improved theming</h3>
<p><a href="https://getbootstrap.com/docs/4.0/getting-started/theming/"><img src="/assets/img/2017/v4-beta2-theming-docs.png" class="d-block img-fluid mb-2 rounded border" alt="Bootstrap Theming docs page" loading="lazy" width="3104" height="1972">
</a></p>
<p>We have a brand <a href="https://getbootstrap.com/docs/4.0/getting-started/theming/">new Theming docs page</a> to replace our old Options page (we’ll automatically redirect folks from the old page). This new page delves into the structure of our Sass files, default variables and customizing them, maps and loops we use, functions, colors, and of course or global Sass options. It also includes a new section to explain how we build our components via Sass maps and loops, specifically our modifier classes (e.g., <code>.btn-danger</code>).</p>
<p>In addition to the documentation changes, we’ve made a few CSS changes to improve how folks interact with our theming options.</p>
<ul>
<li>
<p>We’ve added new theme color variables in addition to the map. Now you can use <code>$primary</code> or <code>theme-color("primary")</code> as needed. The values in <code>$theme-colors</code> are also now mapped to these new variables instead of their direct color.</p>
</li>
<li>
<p>We’ve improved the ability to customize Sass maps. With Beta 1, we didn’t have a setup in place to modify your <code>$theme-colors</code> map without replacing it wholesale. That’s been fixed in Beta 2—override existing values and add more as needed. Our new Theming docs page will show you how it’s done.</p>
</li>
</ul>
<p>Lastly, our <code>$enable-shadows</code> and <code>$enable-gradients</code> Sass variables have finally been updated and integrated into several of our components. Now, when you enable those variables (both are <code>false</code> by default) and recompile, you’ll see subtle gradients and shadows across alerts, buttons, carousels, custom form controls, and dropdown items.</p>
<p><img src="/assets/img/2017/v4-beta2-buttons.png" class="d-block img-fluid mb-2 rounded border" alt="Themed buttons" loading="lazy" width="1352" height="156">
</p>
<p>And when you use <code>$enable-gradients</code>, you’ll enable the new <code>.bg-gradient-</code> utilities (disabled by default) for use in navbars and more.</p>
<p><img src="/assets/img/2017/v4-beta2-bgs.png" class="d-block img-fluid mb-2 rounded border" alt="Themed backgrounds" loading="lazy" width="1764" height="1090">
</p>
<p>Check it out and please share any feedback in an issue.</p>
<h3 id="offset-grid-classes">Offset grid classes</h3>
<p>We brought them back! Prematurely removed ahead of Beta 1, we underestimated the appeal of the <code>.offset-</code> classes for our grid system. Auto margins are simply not enough for y’all. The styles have been restored and our grid docs have been updated. Enjoy!</p>
<h3 id="updated-migration-docs">Updated migration docs</h3>
<p>Given our handful of breaking changes since Beta 1, we added a new section to <a href="https://getbootstrap.com/docs/4.0/migration/#beta-2-changes">our migration docs page</a> to detail exactly what we changed that might be broken for you. We had to rename a few classes here and there to ensure everything’s consistent with the rest of the project.</p>
<p>We’ll be updating this page again for Beta 3 in the same way.</p>
<h3 id="and-more">And more!</h3>
<ul>
<li>Introduced new <code>pointer-events</code> usage on modals. The outer <code>.modal-dialog</code> passes through events with <code>pointer-events: none</code> for custom click handling (making it possible to just listen on the <code>.modal-backdrop</code> for any clicks), and then counteracts it for the actual <code>.modal-content</code> with <code>pointer-events: auto</code>.</li>
<li>Responsive tables now generate classes for each grid breakpoint, meaning we’ve added <code>.table-responsive-{sm,md,lg,xl}</code> to the already present <code>.table-responsive</code>. You might need to adjust your usage depending on when you want a table to resize.</li>
<li>Remove unnecessary <code>color</code> from <code>.badge</code>, and its associated <code>$badge-color</code> variable.</li>
<li>Include two new dist files which contain Popper.js inside <code>bootstrap.bundle.js</code> and <code>bootstrap.bundle.min.js</code>.</li>
<li>Dropped support for Bower as they’ve deprecated the package manager.</li>
<li>Switched breadcrumbs from <code>float</code> to flexbox.</li>
<li>Switched to Stylelint for our CSS linting needs.</li>
<li>We’re now outputting a handful of CSS variables in our compiled CSS for easy prototyping and customizing with our dist files.</li>
<li>Changed the <code>color-yiq</code> from a mixin that included the <code>color</code> property to a function that returns a value, allowing you to use it for any CSS property.</li>
</ul>
<h2 id="coming-in-beta-3">Coming in Beta 3</h2>
<p>Beta 3 is up next for us and already has a <a href="https://github.com/twbs/bootstrap/projects/10">GitHub project board</a> setup to track issues and PRs. Beyond the standard docs improvements and bug fixes, there are a few issues and PRs that are of mind for us:</p>
<ul>
<li><a href="https://github.com/twbs/bootstrap/pull/23444">Revisiting form checkbox and radio markup</a> to ensure we can customize validation messaging (while also making the markup match our custom form checks).</li>
<li>More control over <a href="https://github.com/twbs/bootstrap/pull/24430">input and button variables</a>.</li>
<li><a href="https://github.com/twbs/bootstrap/pull/24401">Improved focus styling for validated custom checks and radios.</a></li>
<li>Addressing form <a href="https://github.com/twbs/bootstrap/issues/23454">validation feedback in input groups</a>.</li>
</ul>
<p>Be sure to follow those issues and PRs if you’re interested in when the merge to our <code>v4-dev</code> branch.</p>
<h2 id="getting-to-v4-final">Getting to v4 Final</h2>
<p>After Beta 3, we’re hoping to quickly move into a final v4 release. Ideally, it’ll also be a smoother and more focused release than the Alpha 6 to Beta 1 move. We heard from a lot of you that the delta between those two releases was too great.</p>
<hr>
<p>For more details on this release’s changes, take a look at the <a href="https://github.com/twbs/bootstrap/issues/23278">Beta 2 ship list issue</a>, as well as the <a href="https://github.com/twbs/bootstrap/projects/4">Beta 2 project</a>. Be sure to <a href="https://bootstrap-slack.herokuapp.com">join our official Slack room!</a> and dive into <a href="https://github.com/twbs/bootstrap/issues/">our issue tracker</a> with bug reports, questions, and general feedback whenever possible.</p>
</div><div class="post">
<h1 class="post-title fw-600">
<a href="/2017/08/10/bootstrap-4-beta/" class="text-decoration-none">
Bootstrap 4 Beta
</a>
</h1>
<div class="d-flex align-items-center mb-4 text-muted author-info">
<a class="d-flex align-items-center text-muted text-decoration-none" href="https://github.com/mdo" target="_blank" rel="noopener">
<img class="mb-0 me-2 rounded-2" srcset="https://github.com/mdo.png?size=32, https://github.com/mdo.png?size=64 2x"
src="https://github.com/mdo.png?size=32"
alt="" width="32" height="32" loading="lazy">
<span>@mdo</span>
</a>
<span class="d-flex align-items-center ms-3" title="10 Aug 17 00:00 UTC">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" class="me-2" viewBox="0 0 16 16" role="img" fill="currentColor">
<path d="M11 6.5a.5.5 0 0 1 .5-.5h1a.5.5 0 0 1 .5.5v1a.5.5 0 0 1-.5.5h-1a.5.5 0 0 1-.5-.5v-1z"/>
<path d="M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3a2 2 0 0 1 2-2h1V.5a.5.5 0 0 1 .5-.5zM1 4v10a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1V4H1z"/>
</svg>
August 10, 2017
</span>
</div>
<div class="ratio ratio-16x9">
<iframe class="lazy" data-src="https://www.youtube-nocookie.com/embed/aQUlA8Hcv4s?rel=0" title="YouTube Video" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" width="760" height="570" allowfullscreen></iframe>
</div>
<p><a href="/2015/08/19/bootstrap-4-alpha/">Two years in the making</a>, we finally have our first beta release of Bootstrap 4. In that time, we’ve broken all the things at least twenty-seven times over with nearly 5,000 commits, 650+ files changed, 67,000 lines added, and 82,000 lines deleted. We also shipped six major alpha releases, a trio of official Themes, and even a job board for good measure. Put simply? <a href="https://www.youtube.com/watch?v=_J6-3l3hCm0">It’s about time.</a></p>
<h2 id="beta">Beta!?</h2>
<p>Long story short, shipping a beta means we’re done breaking all your stuff until our next major version (v5). We’re not perfect, but we’ll be doing our best to keep all the classes, features, and docs URLs as they appear now in this release. We can always add more things, but we cannot take away.</p>
<p>For those who haven’t been using the v4 alpha releases, here are some highlights to get you caught up.</p>
<ul>
<li><strong>Moved from Less to Sass.</strong> Bootstrap now compiles faster than ever thanks to Libsass, and we join an increasingly large community of Sass developers.</li>
<li><strong>Flexbox and an improved grid system.</strong> We’ve moved nearly everything to flexbox, added a new grid tier to better target mobile devices, and completely overhauled our source Sass with better variables, mixins, and now maps, too.</li>
<li><strong>Dropped wells, thumbnails, and panels for cards.</strong> <a href="https://getbootstrap.com/docs/4.0/components/card/">Cards</a> are a brand new component to Bootstrap, but they’ll feel super familiar as they do nearly everything wells, thumbnails, and panels did, only better.</li>
<li><strong>Forked Normalize.css and consolidated all our HTML resets into a new CSS module, Reboot.</strong> Normalize.css has taken a different path than we’d prefer, dropping some core CSS tweaks we’ve long depended upon. Reboot takes the core of Normalize.css and expands it to include more opinionated resets like <code>box-sizing: border-box</code>, margin tweaks, and more all in a single Sass file.</li>
<li><strong>Brand new customization options.</strong> Instead of relegating style embellishments like gradients, transitions, shadows, grid classes, and more to a separate stylesheet like v3, we’ve moved all those options into Sass variables. Want default transitions on everything or to disable rounded corners? Simply update a variable and recompile.</li>
<li><strong>Dropped IE8 and IE9 support, dropped older browser versions, and moved to rem units for component sizing</strong> to take advantage of newer CSS support. Aside from our grid, pixels have been swapped for rems and ems where appropriate to make responsive typography and component sizing even easier. Need support for IE8/IE9, Safari 8-, iOS 8-, etc? Keep using Bootstrap 3.</li>
<li><strong>Rewrote all our JavaScript plugins.</strong> Every plugin has been rewritten in ES6 to take advantage of the newest JavaScript enhancements with new teardown methods, option type checking, new methods, and more.</li>
<li><strong>Improved auto-placement of tooltips, popovers, and dropdowns</strong> thanks to the help of a library called <a href="https://popper.js.org">Popper.js</a>.</li>
<li><strong>Redesigned and improved documentation.</strong> We redesigned it, rewrote it all in Markdown, and added a few handy plugins to streamline examples and code snippets to make working with our docs way easier. We also added an amazing new search form!</li>
<li><strong>New build tools</strong> completely rewritten in npm scripts instead of Grunt, immensely simplifying the process of developing and contributing to Bootstrap.</li>
<li><strong>And so much more!</strong> Custom form controls, a redesigned carousel, an overhauled navbar, HTML5 form validation styles, hundreds of responsive utility classes, new components, and more have also been included.</li>
</ul>
<p>Okay, phew, want to learn even more? Keep reading, or jump right to <a href="https://getbootstrap.com/">those brand new docs</a>!</p>
<h2 id="new-look">New look</h2>
<p>Bootstrap 4 has been sporting a slightly updated look throughout our alpha releases, but it wasn’t until recently that we gave the docs and our components a refresh, too.</p>
<p><a href="https://getbootstrap.com/"><img src="/assets/img/2017/bootstrap-4-beta.png" class="d-block img-fluid mb-2 rounded border" alt="Bootstrap 4 beta docs" loading="lazy" width="2866" height="1976">
</a></p>
<p>In addition to a new color palette and new systems fonts, we have a brand new layout for our documentation. New with this beta is an amazing search form powered by Algolia’s <a href="https://community.algolia.com/docsearch/">DocSearch</a>, an improved page layout with stickied navbar and sidebar, and a new table of contents.</p>
<hr>
<p>For more details on this release’s changes, take a look at the <a href="https://github.com/twbs/bootstrap/issues/21568">Beta 1 ship list issue</a>, as well as the <a href="https://github.com/twbs/bootstrap/milestone/41?closed=1">closed Beta 1 milestone</a>. Be sure to <a href="https://bootstrap-slack.herokuapp.com">join our official Slack room!</a> and dive into <a href="https://github.com/twbs/bootstrap/issues/">our issue tracker</a> with bug reports, questions, and general feedback whenever possible.</p>
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