Why Isn't My CSS3 Background Image Animating?

Animating Background Images with CSS3: A Troubleshooting Guide

When attempting to animate background images using CSS3, you may encounter issues preventing the expected behavior. To rectify these problems, let's delve into the provided code and identify potential misconceptions.

In the example you have provided, the animation seems to be failing due to the incorrect usage of CSS keyframes. The "@-webkit-keyframes" rule syntax was deprecated in the 2020 CSS specification. To resolve this issue, you should update your code to use the standardized "@keyframes" syntax instead.

Here's an updated snippet that should work as intended:

@keyframes test {
  0% {
    background-image: url('frame-01.png');
  }
  20% {
    background-image: url('frame-02.png');
  }
  40% {
    background-image: url('frame-03.png');
  }
  60% {
    background-image: url('frame-04.png');
  }
  80% {
    background-image: url('frame-05.png');
  }
  100% {
    background-image: url('frame-06.png');
  }
}

div {
  float: left;
  width: 200px;
  height: 200px;
  animation-name: test;
  animation-duration: 10s;
  animation-iteration-count: 2;
  animation-direction: alternate;
  animation-timing-function: linear;
}

Remember to update the animation prefix in your browser's dev tools or CSS file to "@keyframes test" instead of "@-webkit-keyframes test."

With these adjustments, your background image should now animate smoothly as intended.

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