I can't figure out what is wrong with this code

Tell us what’s happening:
Describe your issue in detail here.

  **Your code so far**

<style>
div {
  height: 40px;
  width: 70%;
  background: black;
  margin: 50px auto;
  border-radius: 5px;
  position: relative;
}

#rect {
  animation-name: rainbow;
  animation-duration: 4s;
}

@keyframes rainbow {
  0% {
    background-color: blue;
    top: 0px;
    left: 0px;

  }
  50% {
    background-color: green;
    top: 50px;
    left: 25px;

  }
  100% {
    background-color: yellow;
    top: 0px;
    left: -25px;

  }
}
</style>

<div id="rect"></div>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.0 Safari/605.1.15

Challenge: Create Movement Using CSS Animation

Link to the challenge:

Hi @sarahmast14 !

Welcome to the forum!

The code you have shared works on my end. Please ensure that you have disabled any extensions that interface with the freeCodeCamp website (such as Dark Mode and Ad Blocker), and set your browser zoom level to 100%. Both of these factors can cause tests to fail erroneously.