I’m running code that was written about 4 years ago. I know -moz- is no longer necessary but I tried to remove it and it didn’t help.
I have four icons sliding from left to right, once after another. In chrome and IE, the animations play fine. In firefox the timings are out of whack. Am I missing a change in code or should I give up on this and use a jquery script instead?
Yes that looks weird in Firefox. Seems the rerendering only is correct when your mouse is active in the screen.
Maybe try something else like this: https://codepen.io/anon/pen/wyzbwe
The animated blocks must be in the viewport, or at least almost in the viewport. Can’t explain it though.