Animations, even 3d ones, drop-down, sliders, static scroll elements, are often implemented on horrible js with bad performance and accessibility, while trival with a small amount of css.
Sadly, the trivial CSS solutions are often not supported by some browsers that a lot of people use (apart from the obvious IE, Safari on both Mac and iOS is possibly the worst offender for this), making the godawful JavaScript solutions a tragic necessity.
lmao Safari is just fine
Safari is the bain of my existence and owes me money for the sheer amount of time I’ve had to invest in working around their god awful css and svg engines. PWA my a*.