There's a meme-like website that demos this very concept. Then there's a v2.0 or some ++ type versioning where they use very minimal CSS to actually improve the readability. I'm a fan of the use of the minimal CSS to add margins and widths as it improves readability for me.

Searching for it with only the vagueness of what I can think of right now returns nothing useful, and that's with not using Google. Maybe my vague description will be enough with someone with better recall than I have.