css 透明度的设置兼容所有浏览器

名站导航为爱好css的朋友们提供相关的知识。

import link的具体区别
我们知道在网页中引用外部CSS教程有两种方式，即:@import与link,我们也经常听到有人说要使用link来引入CSS教程更好,但是你知道为什么吗? link link就是把外部CSS教程与网页连接起来,具体形式

此篇文章具体介绍如下

复制代码代码如下:
.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教程 properties is for:

opacity: 0.5; This is the “most important” one because it is the current standard in CSS教程. 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.

来源：http://css教程-tricks.com/css教程-transparency-settings-for-all-broswers/
这个我就不想翻译了，很简单，我也只是为了做个记录。哈~~~