How to apply CSS to a Mac Chrome Select Box?
Add the following property to your select in your css file:
-webkit-appearance:none;
There is better option to achieve a natural design:
height:30px;
background:#ffffff;
DEMO JSFiddle
p.s
Vector's answer is hiding the arrows on the right side.
You need to apply -webkit-appearance:none;
when adding CSS to select elements in webkit browsers.
DEMO http://jsfiddle.net/XxkSC/3830/