css透明度的设置（兼容所有浏览器）

最新推荐文章于 2022-05-07 14:30:35 发布

原创最新推荐文章于 2022-05-07 14:30:35 发布 · 669 阅读

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#浏览器 #CSS #Safari #webkit #IE

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本文介绍了一种使用CSS来实现元素背景透明的方法。通过opacity属性及其浏览器特定前缀，可以有效地在不同浏览器上实现一致的效果。文章详细解释了.opacity:0.5;、filter:alpha(opacity=50);及-moz-opacity:0.5;和-khtml-opacity:0.5;等属性的作用。

一句话搞定透明背景！

.transparent_class {
      filter:alpha(opacity=50);
      -moz-opacity:0.5;
      -khtml-opacity: 0.5;
      opacity: 0.5;
}

UPDATE: I wanted to pull this post out of the archives and update it a bit because it there seems to be a good amount of interest in this subject.

Here is what each of those CSS properties is for:

opacity: 0.5; This is the “most important” one because it is the current standard in CSS. This will work in most versions of Firefox, Safari, and Opera. This would be all you need if all browsers supported current standards. Which, of course, they don’t.
filter:alpha(opacity=50); This one you need for IE.
-moz-opacity:0.5; You need this one to support way old school versions of the Mozilla browsers like Netscape Navigator.
-khtml-opacity: 0.5; This is for way old versions of Safari (1.x) when the rendering engine it was using was still referred to as KTHML, as opposed to the current WebKit .