abadideaif you are under 30 years old and picking a font size for something other people need to read, not just yourself: that’s too small. still too small. A LITTLE BIGGER
Paul CantrellAnd respect OS / browser font size preferences and •test with them•!
lp0 on fire 
@inthehands @0xabad1dea @lisamelton, and window widths. I normally use browser windows approximately 1000px wide for reasons to do with window layout (and also because it's a valid reason to virtually shout at some idiot who didn't bother to test adequately).
Yeah, I wish that more sites used that basic formula of doing layout that is (1) em- or ex-based and (2) responsive based on window size relative to em/ex (not px, certainly not device type). It’s such a simple recipe, and it solves so many problems at once.