---
layout: home
title: Bootstrap · The world's most popular mobile-first and responsive front-end framework.
---

<main class="bd-masthead" id="content" role="main">
  <div class="container">

    <span class="bd-booticon outline">B</span>
    <p class="lead">Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile first projects on the web.</p>
    <p class="lead">
      <a href="getting-started#download" class="btn btn-outline-inverse btn-lg" onclick="ga('send', 'event', 'Jumbotron actions', 'Download', 'Download {{ site.current_version }}');">Download Bootstrap</a>
    </p>
    <p class="version">Currently v{{ site.current_version }}</p>
    {% include ads.html %}
  </div>
</main>

<div class="bd-featurette">
  <div class="container">
    <h2 class="bs-docs-featurette-title">Easy to get started.</h2>
    <p class="lead">Quickly include Bootstrap's CSS and JS into any project. Use your favorite package manager, download the source, or use the <a href="#">Bootstrap CDN</a>.</p>

    <hr class="half-rule">

    <div class="row">
      <div class="col-sm-4">
        <h4>Package managers</h4>
        <p>Include Bootstrap's source Sass and JavaScript files via Bower, Composer, Meteor, or npm.</p>
{% highlight bash %}
$ npm install bootstrap
$ bower install bootstrap
$ meteor add twbs:bootstrap
$ composer require twbs/bootstrap
{% endhighlight %}
      </div>
      <div class="col-sm-4">
        <h4>Custom builds</h4>
        <p>Need just a part of Bootstrap? Download a custom build of the compiled CSS and JS.</p>
        <a class="btn btn-secondary" href="#">Reboot</a>
        <a class="btn btn-secondary" href="#">Grid system</a>
        <a class="btn btn-secondary" href="#">Flexbox</a>
      </div>
      <div class="col-sm-4">
        <h4>Bootstrap CDN</h4>
        <p>Use the free Bootstrap CDN to hotlink the compiled CSS and JS.</p>
{% highlight html %}
<link rel="stylesheet" href="{{ site.cdn.css }}">
<script src="{{ site.cdn.js }}"></script>
{% endhighlight %}
      </div>
    </div>

    <hr class="half-rule">

    <p class="lead">More customized builds of Bootstrap's CSS and JS are also available.</p>
    <a href="{{ site.baseurl }}/getting-started/download" class="btn btn-outline btn-lg">More download options</a>
  </div>
</div>

<div class="bd-featurette">
  <div class="container">
    <h2 class="bd-featurette-title">Designed for everyone, everywhere.</h2>
    <p class="lead">Bootstrap makes front-end web development faster and easier. It's made for folks of all skill levels, devices of all shapes, and projects of all sizes.</p>

    <hr class="half-rule">

    <div class="row">
      <div class="col-sm-4">
        <img src="assets/img/sass-less.png" alt="Sass support" class="img-responsive">
        <h4>Preprocessors</h4>
        <p>Bootstrap ships with vanilla CSS, but its source code utilizes <a href="../css/#sass">Sass</a>, a popular CSS preprocessor. Quickly get started with precompiled CSS or build on the source.</p>
      </div>
      <div class="col-sm-4">
        <img src="assets/img/devices.png" alt="Responsive across devices" class="img-responsive">
        <h4>One framework, every device.</h4>
        <p>Bootstrap easily and efficiently scales your websites and applications with a single code base, from phones to tablets to desktops with CSS media queries.</p>
      </div>
      <div class="col-sm-4">
        <img src="assets/img/components.png" alt="Components" class="img-responsive">
        <h4>Full of features</h4>
        <p>With Bootstrap, you get extensive and beautiful documentation for common HTML elements, dozens of custom HTML and CSS components, and awesome jQuery plugins.</p>
      </div>
    </div>

    <hr class="half-rule">

    <p class="lead">Bootstrap is open source. It's hosted, developed, and maintained on GitHub.</p>
    <a href="{{ site.repo }}" class="btn btn-outline btn-lg">View the GitHub project</a>
  </div>
</div>

<div class="bd-featurette">
  <div class="container">
    <h2 class="bd-featurette-title">Built with Bootstrap.</h2>
    <p class="lead">Millions of amazing sites across the web are being built with Bootstrap. Get started on your own with our growing <a href="../getting-started/#examples">collection of examples</a> or by exploring some of our favorites.</p>

    <hr class="half-rule">

    <div class="row bd-featured-sites">
    {% for showcase in site.data.showcase %}
      <div class="col-xs-6 col-sm-3">
        <a href="{{ showcase.expo_url }}" target="_blank" title="{{ showcase.name }}">
          <img src="{{ site.baseurl }}/assets/img/expo-{{ showcase.img }}.jpg" alt="{{ showcase.name }}" class="img-responsive">
        </a>
      </div>
    {% endfor %}
    </div>

    <hr class="half-rule">

    <p class="lead">We showcase dozens of inspiring projects built with Bootstrap on the Bootstrap Expo.</p>
    <a href="{{ site.expo }}" class="btn btn-outline btn-lg">Explore the Expo</a>
  </div>
</div>