Sometimes I see websites using a pattern, where a button or link translates (for example 5px to the top) when hovering it.
See an example in that SO answer
Is this a good or bad thing to do, UX-wise?
Personally I find two negative points:
- the movement might distract the user, when they are just pushing around the mouse, browsing for content
- more important: the is a "line" of mouse y-positions, where the animation would flicker, because the hover area changes with every "tick" of the animation from "hovering" to "not hovering". Like so: