CSS background-image issue for &

问题

HTML

<select data-val="true"  id="GameID" >
   <option value="">Select Game...</option>
   <option value="4">Counter Strike Source</option>
   <option value="5">Medal Of Honor</option>
   <option value="6">NFS Shift</option>
</select>

CSS

select
{
    color: #fff;
    background: url(/img/backgrounds/tab-hover-background.png) rgba(0,0,0,0); 
    border: 1px solid #8093BE;
    width: 242px;
    height: 20px;   
}

option
{
    background: url(/img/backgrounds/tab-hover-background.png) rgba(0,0,0,0); 
}

In Firefox it works fine,
In Opera it works only for select,but not for option
In IE 9.0 & Chrome it has a strange behavior
I want all browsers to display like Firefox

this is a source

回答1:

Its not that easy to change form element's style.. each browser has it's own way to render and create those elements. Some browsers will accept having a background image inside your select, others won't.

A simple technique is to add a default color, so the browser will render the color if it cant render the image.

background: #c3c3c3 url(http://www.3dtuning.ru/img/design/gallery-back.png) repeat-x 0 0;

so this way, firefox users will see a background image (something that always looks ugly, in my opinion) and the rest of the browsers will display with a gray background.

Hope this helps

回答2:

Your alpha transparency is set to 0 in the RGBa values, this means that it will be completely transparent/not visible, this needs to be set to 1 for it to be visible.

Also, you need to put your RGBa value before the url('image.jpg').

回答3:

Like the previous post: color comes before image url. in stead of rgba(0,0,0,0) you better use the word "transparent", as that would be better compatible.

来源：https://stackoverflow.com/questions/7385490/css-background-image-issue-for-select-option

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