layui-ul/demo/nav.html

<fieldset class="layui-elem-field layui-field-title">
  <legend>银色垂直导航</legend>
  <div class="layui-field-box">
    <ul class="layui-nav layui-nav-tree ul-nav-white">
      <!-- 侧边导航: <ul class="layui-nav layui-nav-tree layui-nav-side"> -->
      <li class="layui-nav-item layui-nav-itemed">
        <a href="javascript:;">默认展开</a>
        <dl class="layui-nav-child">
          <dd class="layui-this"><a href="javascript:;">选项1</a></dd>
          <dd><a href="javascript:;">选项2</a></dd>
          <dd><a href="">跳转</a></dd>
        </dl>
      </li>
      <li class="layui-nav-item">
        <a href="javascript:;">解决方案</a>
        <dl class="layui-nav-child">
          <dd><a href="">移动模块</a></dd>
          <dd><a href="">后台模版</a></dd>
          <dd><a href="">电商平台</a></dd>
        </dl>
      </li>
      <li class="layui-nav-item layui-this"><a href="">产品</a></li>
      <li class="layui-nav-item"><a href="">大数据</a></li>
    </ul>
  </div>
</fieldset>

<fieldset class="layui-elem-field layui-field-title">
  <legend>附带说明垂直导航</legend>
  <div class="layui-field-box">
    <div class="ul-section">
      <div class="ul-nav-tree ul-padding-md">

        <div class="ul-nav-tree-group">
          <div class="ul-nav-tree-group-title">起步</div>
          <div class="ul-nav-tree-group-main">
            <a href="" class="ul-nav-tree-item current">
              <div class="ul-nav-tree-item-title">欢迎</div>
              <div class="ul-nav-tree-item-desc">项目介绍/使用说明</div>
            </a>
            <a href="" class="ul-nav-tree-item">
              <div class="ul-nav-tree-item-title">开始使用</div>
              <div class="ul-nav-tree-item-desc">安装方式,注意事项</div>
            </a>
            <a href="" class="ul-nav-tree-item">
              <div class="ul-nav-tree-item-title">如何使用</div>
              <div class="ul-nav-tree-item-desc">复制组件</div>
            </a>
          </div>
        </div>
        <div class="ul-nav-tree-group">
          <div class="ul-nav-tree-group-title">
            组件 </div>
          <div class="ul-nav-tree-group-main">
            <a href="" class="ul-nav-tree-item">
              <div class="ul-nav-tree-item-title">列表</div>
              <div class="ul-nav-tree-item-desc">用户列表/文章列表...</div>
            </a>
            <a href="" class="ul-nav-tree-item">
              <div class="ul-nav-tree-item-title">头部</div>
              <div class="ul-nav-tree-item-desc">页面头</div>
            </a>
            <a href="" class="ul-nav-tree-item">
              <div class="ul-nav-tree-item-title">导航</div>
              <div class="ul-nav-tree-item-desc">横竖导航/多级导航</div>
            </a>
          </div>
        </div>
      </div>
    </div>
  </div>
</fieldset>