Designing and developing UIs for the mobile web is tricky, but it’s extremely difficult to do that while delivering something that performs at 60fps. The best opportunities to getting jank-free transitions on phones/tablets are CSS transition and keyframe animation based, especially tapping into hardware-accelerated transforms and opacity changes.
Effeckt.css is a collection of fantastic experiments and demos exploring CSS-based transitions. It provides very little UI of its own. It’s only hooks for transitions / animations. There is no hover on the mobile web, so any hover-based effects would be excluded or have a tap equivalent.
License: MIT License