How to set Select box background in WebKit?

I want to set Select box of transparent background

I used 开发者_运维问答CSS of select {background: transparent}

But it not working. how do I do?

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Try adding

-webkit-appearance: none;

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try this:

select {
  opacity: 0.7;
  filter: alpha(opacity=70);
}

That is if you want to create a transparent select tag