css-select的三角在不同浏览器的样式是不一样的,所以我们这样解决???
select{
width:57px;
height:23px;
border:1px solid #e9e9e9;
outline: none;
appearance: none;
-moz-appearance: none;
-webkit-appearance: none;
background: url(../images/img/sjx.jpg) no-repeat scroll left center transparent;
background-size: 11px 7px;
background-position:41px;
padding-left: 3px;
}