         <h4><span>文件类型</span></h4>
            <hr>
            <ul class="icons layui-row">
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file"></i><span>fa-file</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file-archive-o"></i><span>fa-file-archive-o</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file-audio-o"><