<head>
<title>Bootstrap 实例 - 堆叠的水平</title>
<link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js"></script>
</head>
原文：http://www.cnblogs.com/tabCtrlShift/p/5585761.html