What is the best way to apply opacity to a div without affecting the background image?

Is there a way to apply opacity to a div without affecting the background image?

When an ajax request is made, a certain class is added to a specific div, causing all its contents to have reduced visibility. However, this also affects the background ajax loading indicator which should remain visible. How can I prevent the background image from becoming opaque in this scenario?

.ajax-mask
{
    opacity: 0.5;
    filter: alpha(opacity=50);
    background: url('/Images/Ajax/Ajax.gif') no-repeat center center;
}

(apologies for the confusion regarding the two opacity styles)

Below is a screenshot illustrating the current situation where the mask is applied, but the indicator should stand out clearly.

cssajaxopacity

Answer №1

After exploring various options, it seems utilizing just the existing single element without CSS3 might be a challenge. Since JavaScript is already in use, one possibility could involve creating a hidden box with a loading image at the bottom of the page and then positioning it in the center of the division.

If you're interested, I also have a CSS3 solution that I developed:

.ajax-mask {
    position: relative;
}
.ajax-mask:after {
    background: rgba(255, 255, 255, 0.5) url('/Images/Ajax/Ajax.gif') no-repeat center center;
    content: " ";
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
}

Answer №2

To prevent overlap, ensure that the loading div / background image is not nested within the same div where you have reduced the opacity.

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