i-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-send"></i><span>fa-send</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-send-o"></i><span>fa-send-o</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-server"></i><span>fa-server</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-share"></i><span>fa-share</span></li>