关于select选择框的箭头清除

/*ie清除*/

select::-ms-expand{ display: none; }

select{
/*取消默认箭头开始*/
appearance:none;
-moz-appearance:none;
-webkit-appearance:none;
/*取消默认箭头结束*/
border: none;
width: 5px;
color: #666;
/* background: url(../img/top.png) no-repeat right 5px center; */
/* background-size: 0.45rem 0.8rem; */
}