Ah, indeed, it seems like modifying transform is a lot more expensive than modifying left, for some reason. I didn't think to check that and assumed they were r

Ah, indeed, it seems like modifying transform is a lot more expensive than modifying left, for some reason. I didn't think to check that and assumed they were roughly equivalent. I'm guessing browsers do extra work on setting transform to recalculate style. What a bizarre result. Nice work!