改变 select下拉框 样式
select{
outline: none;
text-indent: 10px;
height: 45px;
line-height: 45px;
100%;
border:1px solid #c0c3c8;
border-radius: 5px;
display: inline-block;
font-size:14px;
color:#707070;
font-weight: bold;
background:url("../images/icons/arrow-down.png") no-repeat 95% center;
background-color: #fff;
background-size: 16px auto;
-webkit-appearance: none;
-moz-appearance: none;
}