layui-col-md2 layui-col-lg1 '><i class="fa fa-bell"></i><span>fa-bell</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-bell-o"></i><span>fa-bell-o</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-bell-slash"></i><span>fa-bell-slash</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-bell-slash-o"></i><span>fa-bell-slash-o