在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
	<title>Bootstrap 实例 - 按钮</title>
	<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
	<script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <h2>自适应按钮组</h2>
  <div class="btn-group btn-group-justified">
    <div class="btn-group">
      <button type="button" class="btn btn-primary">Apple</button>
    </div>
    <div class="btn-group">
      <button type="button" class="btn btn-primary">Samsung</button>
    </div>
    <div class="btn-group">
      <button type="button" class="btn btn-primary">Sony</button>
    </div>
  </div>
</div>

</body>
</html>
源代码

动行结果
