CSS @keyframes and animation Properties

Tell us what’s happening:
I cant figure out what i’m doing wrong. I keep getting an error message stating that the #reat should have a animation name of rainbow which i changed it to and a animation duration of 4s which i have also changed. Help?

Your code so far

div {
  height: 40px;
  width: 70%;
  background: black;
  margin: 50px auto;
  border-radius: 5px;

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

@keyframes rainbow {
0% {
  background-color: blue;
50% {
  background-color: green;
100% {
  background-color: yellow;


<div id="rect"></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36.

Challenge: Learn How the CSS @keyframes and animation Properties Work

Link to the challenge:

Anndddddd i figured it out …

#anim {
is this asked in the challenge?