How can I achieve a smooth background-image transition in Firefox?

Currently, I'm on the hunt for a substitute for this specific code snippet:

"transition:background-image 1s whatever"

This particular transition only seems to function on webkit browsers, leaving Firefox users out of luck.

I experimented with utilizing opacity as an alternative, but unfortunately, that won't work for me because of the content housed within the background container - it'll vanish along with the background if I opt for opacity.

Your suggestions would be greatly appreciated. Thank you!

htmlcssfirefox

Answer №1

Using 2 pseudo elements allows you to achieve that effect

CSS

.test
{
    width: 400px;
    height: 150px;
    position: relative;
    border: 1px solid green;
}

.test:before, .test:after {
    content: "";
    position: absolute;
    top: 0px;
    right: 0px;
    bottom: 0px;
    left: 0px;
    opacity: 1;
}
.test:before {
    background-color: red;
    z-index: 1;
    transition: opacity 1s;
}

.test:after {
    background-color: green;
}

.test:hover:before {
    opacity: 0;
}

View a fiddle with real images here

(Move your cursor over to see the transition)

To ensure the div content is visible, the pseudo elements should have a negative z-index:

View corrected z-index fiddle here

It appears that IE does not trigger this hover effect

.test:hover:before {
    opacity: 0;
}

However, it will trigger this one

.test:hover {
}
.test:hover:before {
    opacity: 0;
}

(Even though it may seem silly)

Check out a fiddle for IE10 here

Answer №2

Simplest method using hover effect

 

.self-pic {
    height: 350px;
    width: 350px;
    position: relative;
    border-radius: 1rem;
}

img {
    position: absolute;
    left: 0;
    transition: opacity, 1s;
}

img.front:hover {
    opacity: 0;
}

 
<div id="self-pic">
  <img class="back" src="https://source.unsplash.com/random/350*350" />
  <img class="front" src="https://source.unsplash.com/random/351*351" />
</div>

Answer №3

Yes, it is functional

Watch the demonstration here:

Unfortunately, Firefox has yet to incorporate this feature.

Answer №4

#element_id {
    -webkit-transition: all 1s ease-in-out;
    -moz-transition: all 1s ease-in-out;
    -o-transition: all 1s ease-in-out;
    transition: all 1s ease-in-out;
}

Is this what you're looking for? Simply replace "all" with "background-image"

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