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I'm a bystander that ploughed through quite a lot of text regarding one case.

How do you do ngon grids in CSS?

I'm not sure if you are joking, but the answer is: you don't :-)

N-gon grids don't make sense for N other than 3, 4, and 6 [1]. N=4 is easy, N=6 is in the OP. I suspect one could find a similar "css trick" for N=3.

Don’t forget about the 15 pentagonal tilings! https://en.wikipedia.org/wiki/Pentagonal_tiling

Also cool: the last one wasn't discovered until 2015.