select{width: 100%;font-size: 1em;color: @white;background-color: @darkBlue;background: url(../img/down.png) no-repeat center right;background-size: .8em; -moz-appearance: none;
-webkit-appearance:none;appearance:none;
option{background-color: @darkBlue;}
}
原文:http://www.cnblogs.com/yangqi1992/p/6426334.html