<!DOCTYPE html>
<html>
<head>
<title>Bootstrap实例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://apps.bdimg.com/libs/bootstrap/3.3.0/css/bootstrap.min.css">
<script src="https://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<script src="https://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h1>h1 Bootstrap heading (36px)</h1>
<h2>h2 Bootstrap heading (30px)</h2>
<h3>h3 Bootstrap heading (24px)</h3>
<h4>h4 Bootstrap heading (18px)</h4>
<h5>h5 Bootstrap heading (14px)</h5>
<h6>h6 Bootstrap heading (12px)</h6>
</div>
</body>
</html>