 <div class="layui-menu-body-title">
                  menu item 9-2
                  <i class="layui-icon layui-icon-right"></i>
                </div>
                <div class="layui-panel layui-menu-body-panel">
                  <ul>
                    <li><div class="layui-menu-body-title">menu item 9-2-1</div></li>
                    <li><div class="layui-menu-body-title">menu item 9-2-2</div></li>
                    <li><div class="layui-menu-body-title">menu item 9-2-3</div></li>
             