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<html>
<head>
<meta charset="utf-8">
<title>联想控股</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="css/bootstrap.css" rel="stylesheet" type="text/css">
<script src="http://code.jquery.com/jquery.js"></script>
<script src="js/bootstrap.min.js"></script>
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<body>
<nav class="navbar navbar-default" role="navigation">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#menu">
<span class="sr-only">展开导航</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">网站标题</a>
</div>
<div class="collapse navbar-collapse" id="menu">
<ul class="nav navbar-nav">
<li class="active"><a href="#">首页</a></li>
<li><a href="#">导航标题1</a></li>
<li><a href="#">导航标题2</a></li>
<li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown">下拉菜单 <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">下拉菜单1</a></li>
<li class="divider"></li>
<li><a href="#">下拉菜单2</a></li>
<li class="divider"></li>
</ul>
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