<title>Bootstrap 实例 - 标签</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>
<h1>Example Heading <span class="label label-default">Label</span></h1>
<h2>Example Heading <span class="label label-default">Label</span></h2>
<h3>Example Heading <span class="label label-default">Label</span></h3>
<h4>Example Heading <span class="label label-default">Label</span></h4>