How to Maintain Opacity in Div Backgrounds in IE8?

How to Maintain Opacity in Div's Background When Using IE 8?

In Internet Explorer 8, adjusting the opacity of a div's background can affect the elements it contains.

Solution: Use rgba() Color

To address this issue, set the background color using the rgba() function:

.myelement {
    background: rgba(200, 54, 54, 0.5);
}

The fourth value in rgba() represents the alpha channel, controlling opacity.

IE8 Compatibility Using CSS3Pie

Unfortunately, rgba() is not supported in IE8. To enable it, utilize CSS3Pie:

.myelement {
    background: rgba(200, 54, 54, 0.5);
    -pie-background:  rgba(200, 54, 54, 0.5);
    behavior: url(PIE.htc);
}

Alternative: IE Filter Option

Alternatively, IE's filter property with the gradient keyword can achieve a similar effect:

.myelement {
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#33c8348a, endColorstr=#33c8348a);
}

While rgba() with CSS3Pie is recommended for cleaner stylesheets, the filter approach remains viable.

The above is the detailed content of How to Maintain Opacity in Div Backgrounds in IE8?. For more information, please follow other related articles on the PHP Chinese website!