This is Premature Optimization: CSS Edition. He buries the lede further down: "That Mozilla article I linked to at the top? Literally 10 years old. Fact: compu

This is Premature Optimization: CSS Edition. He buries the lede further down: "That Mozilla article I linked to at the top? Literally 10 years old. Fact: computers were way slower 10 years ago. I have a feeling this stuff was more important back then." and "I think the lesson here is not to sacrifice semantics or maintainability for efficient CSS."