Animation challenge passing but not working

So in VIsual Applied Accesiblity, the starting keyframes challenges are passing.

I am following every rule… but the keyframe code is black like not colored and i am getting the checkmarks but it is not working in the output area…

I am stuck because i wanna do this write also i like seeing what i make… so any tips?

If you edit the code by even simply adding a space, the preview window will refresh and you should be able to see the animation play. But you’ll need to edit the code to refresh the preview every time you want to see the animation play.