右对齐

select{
width:auto;
direction: rtl;
}
select option {
  direction: ltr;
}

去掉箭头(不设置背景色会有灰色背景)

select{
appearance:none;
-moz-appearance:none;
-webkit-appearance:none;
background-color: #fff;
/*设置箭头*/
background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAJCAYAAAAGuM1UAAAAH0lEQVR42mNgoDnQ13f7TwiTpIkkm0hyHkl+YhhQAABcfyjsqSyTLgAAAABJRU5ErkJggg==") no-repeat scroll right center transparent;
padding-right: 14px;
}

清除ie的默认选择框样式,隐藏下拉箭头

select::-ms-expand {
display: none;
}
05-11 20:23