<title>Bootstrap 实例 - 按钮组的大小</title>
<link href="//libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
<script src="//libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="//libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<div class="btn-group btn-group-lg">
<button type="button" class="btn btn-default">Button 1</button>
<button type="button" class="btn btn-default">Button 2</button>
<button type="button" class="btn btn-default">Button 3</button>
<div class="btn-group btn-group-sm">
<button type="button" class="btn btn-default">Button 4</button>
<button type="button" class="btn btn-default">Button 5</button>
<button type="button" class="btn btn-default">Button 6</button>
<div class="btn-group btn-group-xs">
<button type="button" class="btn btn-default">Button 7</button>
<button type="button" class="btn btn-default">Button 8</button>
<button type="button" class="btn btn-default">Button 9</button>