在版本 2.0 中，Bootstrap 为手机、平板电脑、笔记本、小型台式机、大型宽屏台式机等添加了响应特性。
可以通过向页面添加 bootstrap-responsive.css 文件（位于 docs\assets\css 下）来让布局具有响应性。
Bootstrap 固定布局
如果您想要创建基于固定像素数的网页或 app，请看这部分的教程。
用法
<body>
<div class="container">
...
</div>
</body>
解释
bootstrap.css（位于 bootstrap 的主文件夹的 docs\assets\css 下）的第 261 到 273 行，为创建主容器渲染样式，从而创建一个固定布局。固定布局的目的是为网页或 app 创建一个 940 像素（默认）宽的布局。
Bootstrap 固定布局的实例
下面的代码创建一个网页固定布局。为了定制，除了默认样式，还需创建一个新的 css 文件 example-fixed-layout.css，与 bootstrap.css 位于同一个文件夹下。
CSS 代码
body {
padding-top: 60px
padding-bottom: 40px
}
.nav li {
padding-top: 5px
}
.leaderboard {
padding: 60px
margin-bottom: 30px
background-image: url('/twitter-bootstrap/images/gridbg.gif')
background-repeat:repeat
-webkit-border-radius: 6px
-moz-border-radius: 6px
border-radius: 6px
}
.leaderboard h1 {
font-size: 40px
margin-bottom: 5px
line-height: 1
letter-spacing: -1px
color:#FF6600
}
.leaderboard p {
font-size: 18px
font-weight: 200
line-height: 27px
}
HTML 代码
<!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 prim www.hbbz08.com ary 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">
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