To animate and produce neat effects in a regular web experience that isn’t a game or some other large-scale application, web animation libraries are the go-to solution.

AnimeJS and motion.dev are two FOSS animation libraries that fit this set of requirements just perfectly without having to go all-in with a game or 3D library such as ThreeJs, BabylonJS, PixiJS or PhaserIO, which are overkill for most everyday animation scenarios.