There was a bootstrap era, where everything looked the same. Then there was a materialUI'ish era, this was weaker in dominance because the design is more controversial and often downright bad in UX. Now we are in tailwind era.

Not hating, it looks and works ok and I understand spending time on custom design is not something you should optimize for as an early stage era startup.

But I do miss the times of mid noughts where people were playing with styles (css zen garden anyone?)