lucy24 - 12:47 am on Aug 22, 2011 (gmt 0)
So, whatever font-size looks "right" is very much dependent on the font used
Especially the generic font-family. Most sans-serif fonts have a proportionally bigger x-height and therefore "read" bigger than serif fonts of the same point size. Lacking full implementation of font-size-adjust, I've sometimes fudged it by including "font-size: 95%" whenever a sans-serif font shows up in close conjunction with a serif font.
:: shuffling papers ::
From the CSS 2.0 specs [w3.org] ... which is why I've still got both 2.0 and 2.1 bookmarked ;) Scroll down for nicely dramatic series of illustrations.
###. Forums don't seem to want to include the #propdef-font-size-adjust part, so you'll have to cut & paste or do a bit of further clicking.