2 layui-col-lg1 '><i class="fa fa-eraser"></i><span>fa-eraser</span></li>
                <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-o"></i><span>fa-file-o</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-file-text"></i><span>fa-file-text</span></li>
             