<title>Bootstrap 实例 - 垂直的按钮组</title>
<link rel="stylesheet" href="/css/bootstrap/bootstrap3.3.7.min.css">
<script src="/js/bootstrap/jquery.min.js"></script>
<script src="/js/bootstrap/bootstrap3.3.7.min.js"></script>
<div class="btn-group-vertical">
<button type="button" class="btn btn-default">按钮 1</button>
<button type="button" class="btn btn-default">按钮 2</button>
<div class="btn-group-vertical">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
<ul class="dropdown-menu">
<li><a href="#">下拉链接 1</a></li>
<li><a href="#">下拉链接 2</a></li>