<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>编程练习2</title>
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.2.0/css/bootstrap.min.css">
<nav class="navbar navbar-default" role="navigation">
<div>
<button type="button" data-toggle="collapse"
data-target="#example-navbar-collapse">
<span>某管理系统</span>
<span></span>
<span></span>
<span></span>
</button>
<a href="#">某管理系统</a>
</div>
<div class="collapse navbar-collapse" id="example-navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="#">首页</a></li>
<li>
<a href="#" data-toggle="dropdown">功能 <b></b></a>
<ul>
<li role="presentation">业务功能</li>
<li><a href="#">信息建立</a></li>
<li><a href="#">信息查询</a></li>
<li><a href="#">信息管理</a></li>
<li></li>
<li role="presentation">系统功能</li>
<li><a href="#">设置</a></li>
</ul>
</li>
<li><a href="#">帮助</a></li>
</ul>
<form class="navbar-form navbar-right" role="search">
<div>
<input type="text" placeholder="用户名...">
<input type="text" placeholder="密码...">
</div>
<button type="submit" class="btn btn-default">登录</button>
</form>
</div>
</nav>
<script src="http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script>
<script src="http://cdn.bootcss.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
</body>
</html>
