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源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Bootstrap 实例 - 垂直的按钮组</title> <link href="//cdn.staticfile.net/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <script src="//cdn.staticfile.net/jquery/2.1.1/jquery.min.js"></script> <script src="//cdn.staticfile.net/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script> </head> <body> <div class="btn-group-vertical"> <button class="btn btn-default" type="button">按钮 1</button> <button class="btn btn-default" type="button">按钮 2</button> <div class="btn-group-vertical"> <button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button"> 下拉 <span class="caret"></span> </button> <ul class="dropdown-menu"> <li><a href="#">下拉链接 1</a></li> <li><a href="#">下拉链接 2</a></li> </ul> </div> </div> </body> </html>
运行结果