html运行实例（bs_txt_hn_1）-搜寻教程库

代码示例：（标识：bs_txt_hn_1）

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <p>每个 Bootstrap 标题的 font-size 取决于屏幕大小。尝试调整浏览器窗口的大小可查看效果。</p>
  <h1>h1 Bootstrap 标题</h1>
  <h2>h2 Bootstrap 标题</h2>
  <h3>h3 Bootstrap 标题</h3>
  <h4>h4 Bootstrap 标题</h4>
  <h5>h5 Bootstrap 标题</h5>
  <h6>h6 Bootstrap 标题</h6>
</div>

</body>
</html>