首页 | 简单教程,简单编程

代码编辑器：

<!DOCTYPE html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.bootcss.com/foundation/5.5.3/css/foundation.min.css">
<script src="https://cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/foundation/5.5.3/js/foundation.min.js"></script>
<script src="https://cdn.bootcss.com/foundation/5.5.3/js/vendor/modernizr.js"></script>
<nav class="top-bar" data-topbar>
  <ul class="title-area">
    <li class="name">
      <h1><a href="#">WebSiteName</a></h1>
    </li>
    <li class="toggle-topbar menu-icon"><a href="#"><span>Menu</span></a></li>
  </ul>

<section class="top-bar-section">
    <ul class="left">
      <li class="has-dropdown">
        <a href="#">Dropdown</a>
        <ul class="dropdown">
          <li><label>Level 1</label></li>
          <li><a href="#">Link</a></li>
          <li><a href="#">Link</a></li>
          <li class="has-dropdown">
            <a href="#">New dropdown</a>
            <ul class="dropdown">
              <li><label>Level 2</label></li>
              <li><a href="#">2nd level dropdown</a></li>
              <li><a href="#">2nd level dropdown</a></li>
              <li class="has-dropdown">
                <a href="#">New dropdown</a>
                <ul class="dropdown">
                  <li><label>Level 3</label></li>
                  <li><a href="#">3rd level dropdown</a></li>
                  <li><a href="#">3rd level dropdown</a></li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </section>
</nav>

<div style="padding:20px;">
  <h3>导航栏内嵌下拉菜单</h3>
  <p>范例演示了下拉菜单中再嵌入下拉菜单</p>
</div>

代码编辑器：

运行结果：