#udt-popup{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:9999}.udt-box{background:#fff;width:360px;padding:20px;margin:10% auto;position:relative}.udt-box input,.udt-box textarea{width:100%;margin-bottom:10px}.udt-close{position:absolute;top:5px;right:10px;cursor:pointer}