#SystemVar.demo-ruleForm{width:50%;margin:0 auto}.file_w{width:122px;height:122px;border:1px dashed #d5d5d5;line-height:122px;text-align:center;background-size:cover!important}.sub_t{color:#807e7e;margin-left:20px;width:201px;line-height:20px}