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This article introduces the knowledge of "how to set background color transparency in css". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

There are two ways to set background color transparency in css: one is through rgba, and the other is through backgroud and opacity.

Setting background color transparency through backgroud and opacity

The attribute value in the background attribute is relatively simple, so we won't go into details here. You can refer to the css learning manual to learn about it. Let's take a brief look at the opacity attribute here.

The "opacity" of the opacity attribute parameter is expressed as a number, from 0.0 to 1.0, with full transparency of 0.0 and full opacity of 1.0. In other words, a higher number means that the element is more opaque. In addition to opacity, inherit inherits parent properties, but browser support is poor and is not recommended.

The code is as follows:

.box {

Width:300px

Height:200px

Margin:0auto

Border:1pxsolid#ccc

Background:red

Opacity:0.2

}

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