首页 | 简单教程,简单编程

代码编辑器：

<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/static/lib/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="/static/lib/jquery/3.3.1/jquery.min.js"></script>
<script src="/static/lib/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="/static/lib/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<div class="container">
  <h2>胶囊下拉菜单</h2>
  <p>在胶囊导航上可以添加下拉菜单</p>
  <ul class="nav nav-pills">
  <li class="nav-item">
    <a class="nav-link active" href="#">Python</a>
  </li>
  <li class="nav-item dropdown">
    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#">Java</a>
    <div class="dropdown-menu">
      <a class="dropdown-item" href="#">Servlet</a>
      <a class="dropdown-item" href="#">JSP</a>
      <a class="dropdown-item" href="#">Spring</a>
    </div>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">PHP</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Perl</a>
  </li>
</ul>
</div>

运行结果：