How to set opacity to the background color of a div?

2018-07-02 01:10:23

This question already has an answer here:

CSS opacity only to background color not the text on it? [duplicate] 11 answers

CSS 3引入了RGB颜色，您可以将其与图形组合使用，以实现向后兼容的解决方案。

我认为rgba是最快最简单的！

background: rgba(225, 225, 225, .8)

I think this covers just about all of the browsers. I have used it successfully in the past.

#div {
    filter: alpha(opacity=50); /* internet explorer */
    -khtml-opacity: 0.5;      /* khtml, old safari */
    -moz-opacity: 0.5;       /* mozilla, netscape */
    opacity: 0.5;           /* fx, safari, opera */
}

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