How to apply CSS opacity in IE7 and IE8 browsers
Topic: HTML / CSSPrev|Next
Answer: Use Microsoft "alpha filter" property
The CSS3 opacity property is only supported in Internet Explorer 9 and above browsers.
However, Internet Explorer 8 and earlier versions supports a Microsoft-only property "alpha filter" to control the transparency of an element. Here's an example:
Example
Try this code »<!DOCTYPE html>
<html lang="en">
<head>
<title>CSS Opacity for IE8 and Lower</title>
<style>
p {
filter: alpha(opacity=50);
zoom: 1; /* Fix for IE7 */
opacity: 0.5; /* Standard Syntax */
}
</style>
</head>
<body>
<p><strong>Note:</strong> Alpha filters is Microsoft-only property to control transparency in IE8 and earlier version, however it creates invalid code in your CSS.</p>
</body>
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