>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file-sound-o"></i><span>fa-file-sound-o</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file-video-o"></i><span>fa-file-video-o</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file-word-o"></i><span>fa-file-word-o</span></li>
                <li class='layui-col-xs4 layui-col-sm