I dont know what im missing

Tell us what’s happening: I don’t know what I am missing I added the “animation-timing-function” to both ball1 and ball2 and I don’t know what else I need to do.

Your code so far


.balls {
  border-radius: 50%;
  background: linear-gradient(
  position: fixed;
  width: 50px;
  height: 50px;
  margin-top: 50px;
  animation-name: bounce;
  animation-duration: 2s;
  animation-iteration-count: infinite;
#ball1 {
  animation-timing-function: linear;
#ball2 {
  animation-timing-function: ease-out;

@keyframes bounce {
  0% {
    top: 0px;
  100% {
    top: 249px;


<div class="balls" id="ball1"></div>
<div class="balls" id="ball2"></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/18.17763.

Challenge: Change Animation Timing with Keywords

Link to the challenge:

Your code seems to work for me. I am using Google Chrome. What browser are you using?

Here is a recent reply about browser support: Lesson is broken?


I am using edge. I will run it on chrome thank you so much.

Hey, I was having issues on chrome as well, firefox has been working much better for me. If your issue persists give that a try!

Good luck!

1 Like

awesome i will keep that in mind. thank you for the help!

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Same with me. It works.

It also wasn’t working for me using Edge and then when I switched to chrome it did.