菜鸟教程在线编辑器

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"> 
    <title>Bootstrap 实例 - 按钮</title>
    <link rel="stylesheet" href="https://cdn.staticfile.net/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://cdn.staticfile.net/jquery/2.1.1/jquery.min.js"></script>
    <script src="https://cdn.staticfile.net/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
​
<div class="container">
  <h2>分隔按钮</h2>
  <div class="btn-group">
    <button type="button" class="btn btn-primary">Sony</button>
    <button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
      <span class="caret"></span>
    </button>
    <ul class="dropdown-menu" role="menu">
      <li><a href="#">Tablet</a></li>
      <li><a href="#">Smartphone</a></li>
    </ul>
  </div>
</div>
​
</body>
</html>