简单教程
提交运行
代码编辑器：
<!DOCTYPE htm> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script> <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <style>body {margin:20px}</style> <p> .list-unstyled 类移除了默认的列表样式，列表项左对齐 (直接子元素):</p> <ul class="list-unstyled"> <li>Coffee</li> <li>Tea <ul> <li>Black tea</li> <li>Green tea</li> </ul> </li> <li>Milk</li> </ul>
运行结果：