菜鸟教程在线编辑器

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AI 编程工具
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<!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://cdn.staticfile.net/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
  <script src="https://cdn.staticfile.net/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://cdn.staticfile.net/popper.js/1.15.0/umd/popper.min.js"></script>
  <script src="https://cdn.staticfile.net/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
​
<div class="container">
  <h2>排版</h2>
  <p class="text-lowercase">Lowercased text.</p>
  <p>The <abbr title="World Health Organization">WHO</abbr> was founded in 1948. (normal abbr)</p>      
  <p>The <abbr title="World Health Organization" class="initialism">WHO</abbr> was founded in 1948. (slightly smaller abbr)</p>
</div>
​
</body>
</html>