<html>
<head>
<title>Bootstrap 实例 - 按钮激活状态</title>
<link href="https://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
<script src="https://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="https://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
</head>
<body>
<p>
<button type="button" class="btn btn-default btn-lg ">
默认按钮
</button>
<button type="button" class="btn btn-default btn-lg active">
激活按钮
</button>
</p>
<p>
<button type="button" class="btn btn-primary btn-lg ">
原始按钮
</button>
<button type="button" class="btn btn-primary btn-lg active">
激活的原始按钮
</button>
</p>
</body>
</html>