#search-car-dealer{
appearance:none;
-moz-appearance:none;
-webkit-appearance:none;
background: url("http://ourjs.github.io/static/2015/arrow.png") no-repeat scroll right center transparent;
}
#search-car-dealer::-ms-expand { display: none;}
原文：http://www.cnblogs.com/vue-move/p/6930281.html