I think the best way to deal with that is to use a CSS processor (I prefer Sass). You can make a "mixin" (or whatever term your processor prefers) that accepts

I think the best way to deal with that is to use a CSS processor (I prefer Sass). You can make a "mixin" (or whatever term your processor prefers) that accepts a selector and styles it. Still readable, still no JS required (if you want to go that route), and you can document the heck out of it. "Oh no, more tooling". Yeah, more tooling.