css去掉select下拉箭头

效果演示

代码

<select id="mySelect">
	<option name="test" value="" class="first">下拉菜单一</option>       
	<option name="test" value="" class="">下拉菜单一</option>       
	<option name="test" value="" class="">下拉菜单一</option> 
	<option name="test" value="" class="">下拉菜单一</option> 
	<option name="test" value="" class="">下拉菜单一</option> 
</select>
<style>
select {-webkit-appearance: none;width:200px;height:30px;line-height:30px;border:none;background:#ddd;}
</style>