> There is an open proposal(opens in new tab) to add a spring() timing function to CSS. Unlike linear(), this would actually be a true spring physics implementation! It wouldn’t have any of the limitations we’ve discussed here.

Uh huh... How long till a proper implementation of CSS requires a proper emulator of relativistic physics and quantum effects? Have we learned nothing from modern browsers already becoming de-facto poorly-specced and poorer-yet implemented JS-based operating systems / malware delivery vehicles?