bootstrap提供的布局主要有两种，固定布局和流动布局。

Bootstrap 固定布局

用法

<body>

  <div class="container">

    ...

  </div>

</body>

实例：

<!DOCTYPE html>

<html lang="en">

<head>

<meta charset="utf-8">

<title>Example of Fixed Layout with Bootstrap version 2.0 from w3cschool.cc</title>

<meta name="viewport" content="width=device-width, initial-scale=1.0">

<meta name="description" content="Example of Fixed Layout with Bootstrap version 2.0 from w3cschool.cc">

<meta name="author" content="">

<!-- Le styles -->

<link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap.css" rel="stylesheet">

<link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/example-fixed-layout.css" rel="stylesheet">

<!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->

<!--[if lt IE 9]>

<script src="//html5shim.googlecode.com/svn/trunk/html5.js"></script>

<![endif]-->

<!-- Le fav and touch icons -->

<link rel="shortcut icon" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/favicon.ico">

<link rel="apple-touch-icon" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/apple-touch-icon.png">

<link rel="apple-touch-icon" sizes="72x72" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/apple-touch-icon-72x72.png">

<link rel="apple-touch-icon" sizes="114x114" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/apple-touch-icon-114x114.png">

</head>

<body>

<div class="navbar navbar-fixed-top">

<div class="navbar-inner">

<div class="container">

<a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">

<span class="icon-bar"></span>

<span class="icon-bar"></span>

<span class="icon-bar"></span>

</a>

<a class="brand" href="#"><img src="/images/w3r.png" width="111" height="30" alt="w3cschool logo" /></a>

<div class="nav-collapse">

<ul class="nav">

<li class="active"><a href="#">Home</a></li>

<li><a href="#about">About</a></li>

<li><a href="#contact">Contact</a></li>

</ul>

</div><!--/.nav-collapse -->

</div>

</div>

</div>

<div class="container">

<!-- Main hero unit for a primary marketing message or call to action -->

<div class="leaderboard">

<h1>w3cschool Web Store</h1>

<p>Try and purchase HTML5, JS, Ruby, PHP-MySQL based web apps to enhance your productivity at affordable price.</p>

<p><a class="btn btn-success btn-large">Sign Up for a 30 day free trial</a></p>

</div>

<!-- Example row of columns -->

<div class="row">

<div class="span4">

<h2>HTML5 and JS Apps</h2>

<p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh,ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>

<p><a class="btn btn-success btn-large" href="#">View apps</a></p>

</div>

<div class="span4">

<h2>Ruby Apps</h2>

<p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh,ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>

<p><a class="btn btn-success btn-large" href="#">View apps</a></p>

</div>

<div class="span4">

<h2>PHP MySQL Apps</h2>

<p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>

<p><a class="btn btn-success btn-large" href="#">View apps</a></p>

</div>

</div>

<hr>

<footer>

<p>&copy; Company 2012</p>

</footer>

</div> <!-- /container -->

<!-- Le javascript

================================================== -->

<!-- Placed at the end of the document so the pages load faster -->

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/jquery.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-transition.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-alert.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-modal.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-dropdown.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-scrollspy.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-tab.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-tooltip.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-popover.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-button.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-collapse.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-carousel.js"></script>

<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-typeahead.js"></script>

</body>

</html>

效果：

Bootstrap 流动布局

用法

<div class="container-fluid">

  <div class="row-fluid">

    <div class="span2">

      <!--Sidebar content-->

    </div>

    <div class="span10">

      <!--Body content-->

    </div>

  </div>

</div>

实例：

<!DOCTYPE html>

<html lang="en">

  <head>

    <meta charset="utf-8">

    <title>Example of Fluid Layout with Bootstrap version 2.0 from w3cschool.cc</title>

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <meta name="description" content="Example of Fluid Layout with Bootstrap version 2.0 from w3cschool.cc">

    <meta name="author" content="">

    <!-- Le styles -->

    <link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap.css" rel="stylesheet">

    <link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/example-fluid-layout.css" rel="stylesheet">

    <!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->

    <!--[if lt IE 9]>

      <script src="//html5shim.googlecode.com/svn/trunk/html5.js"></script>

    <![endif]-->

    <!-- Le fav and touch icons -->

    <link rel="shortcut icon" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/favicon.ico">

    <link rel="apple-touch-icon" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/apple-touch-icon.png">

    <link rel="apple-touch-icon" sizes="72x72" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/apple-touch-icon-72x72.png">

    <link rel="apple-touch-icon" sizes="114x114" href="../bootstrap/twitter-bootstrap-v2/docs/examples/images/apple-touch-icon-114x114.png">

  </head>

  <body>

    <div class="navbar navbar-fixed-top">

      <div class="navbar-inner">

        <div class="container-fluid">

          <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">

            <span class="icon-bar"></span>

            <span class="icon-bar"></span>

            <span class="icon-bar"></span>

          </a>

          <a class="brand" href="#"><img src="/images/w3r.png" width="111" height="30" alt="w3cschool logo" /></a>

          <div class="nav-collapse">

            <ul class="nav">

              <li class="active"><a href="#">Home</a></li>

              <li><a href="#about">About</a></li>

              <li><a href="#contact">Contact</a></li>

            </ul>

            <p class="navbar-text pull-right">Logged in as <a href="#">username</a></p>

          </div><!--/.nav-collapse -->

        </div>

      </div>

    </div>

    <div class="container-fluid">

      <div class="row-fluid">

        <div class="span3">

          <div class="well sidebar-nav">

            <ul class="nav nav-list">

              <li class="nav-header">Frontend</li>

              <li class="active"><a href="#">HTML 4.01</a></li>

              <li><a href="#">HTML5</a></li>

              <li><a href="#">CSS</a></li>

              <li><a href="#">JavaScript</a></li>

              <li><a href="#">Twitter Bootstrap</a></li>

              <li><a href="#">Firebug</a></li>

              <li class="nav-header">Backend</li>

              <li><a href="#">PHP</a></li>

              <li><a href="#">SQL</a></li>

              <li><a href="#">MySQL</a></li>

              <li><a href="#">PostgreSQL</a></li>

              <li><a href="#">MongoDB</a></li>

           </ul>

          </div><!--/.well -->

        </div><!--/span-->

        <div class="span9">

          <div class="leaderboard">

            <h1>Learn. Practice. Develop.</h1>

            <p>w3cschool offers web development tutorials. We believe in Open Source. Love standards. And prioritize simplicity                              and readability while serving content.</p>

            <p><a class="btn btn-success btn-large">Join w3cschool now</a></p>

          </div>

          <div class="row-fluid">

            <div class="span4">

              <h2>Learn</h2>

              <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>

              <p><a class="btn btn-success btn-large" href="#">Start Learning now</a></p>

            </div><!--/span-->

            <div class="span4">

              <h2>Practice</h2>

              <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>

              <p><a class="btn btn-success btn-large" href="#">Start percticing now</a></p>

            </div><!--/span-->

            <div class="span4">

              <h2>Develop</h2>

              <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>

              <p><a class="btn btn-success btn-large" href="#">Start developing now</a></p>

            </div><!--/span-->

          </div><!--/row-->

          <hr>

     <footer>

        <p>&copy; Company 2012</p>

      </footer>

    </div><!--/.fluid-container-->

    <!-- Le javascript

    ================================================== -->

    <!-- Placed at the end of the document so the pages load faster -->

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/jquery.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-transition.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-alert.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-modal.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-dropdown.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-scrollspy.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-tab.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-tooltip.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-popover.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-button.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-collapse.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-carousel.js"></script>

    <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-typeahead.js"></script>

  </body>

</html>

效果如下：

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