You have to give height to your select
& give box-sizing
property for this also.
select {
border:1px solid #ccc;
vertical-align:top;
height:20px;
}
input, select{
box-sizing: border-box;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
}
Check this http://jsfiddle.net/RCnQa/16/
Works on IE8 & above.