<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style>
.box{
400px;
height: 600px;
margin-top: 100px;
}
</style>
</head>
<body>
<div class="container box">
<div class="panel-group">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a href="#ding" data-toggle="collapse" data-parent="#accordion">订单管理</a>
</h4>
</div>
<div id="ding" class="panel-collapse collapse in">
<div class="panel-body">
<ul class="nav">
<li>
<a href="#">衣服管理</a>
</li>
<li>
<a href="#">鞋子管理</a>
</li>
<li>
<a href="#">水果管理</a>
</li>
<li>
<a href="#">蔬菜管理</a>
</li>
<li>
<a href="#">电脑管理</a>
</li>
</ul>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a href="#hui" data-toggle="collapse" data-parent="#accordion">会员管理</a>
</h4>
</div>
<div id="hui" class="panel-collapse collapse">
<div class="panel-body">
<ul class="nav">
<li>
<a href="#">衣服管理</a>
</li>
<li>
<a href="#">鞋子管理</a>
</li>
<li>
<a href="#">水果管理</a>
</li>
<li>
<a href="#">蔬菜管理</a>
</li>
<li>
<a href="#">电脑管理</a>
</li>
</ul>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a href="#cai" data-toggle="collapse" data-parent="#accordion">财务管理</a>
</h4>
</div>
<div id="cai" class="panel-collapse collapse">
<div class="panel-body">
<ul class="nav">
<li>
<a href="#">衣服管理</a>
</li>
<li>
<a href="#">鞋子管理</a>
</li>
<li>
<a href="#">水果管理</a>
</li>
<li>
<a href="#">蔬菜管理</a>
</li>
<li>
<a href="#">电脑管理</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
