lucy24 - 12:30 am on Jul 1, 2013 (gmt 0)
Don't most people have their browsers settings set to override the code-specified font size and show their preferred size instead?
You've spent too much time among webmasters :) Most people don't even know that their browsers have prefs, let alone how to change them. Well, considering that a pretty significant chunk of people don't know what a browser is in the first place...
Paradoxically, a font size in explicit pixels is easier to override that something equally egregious like "50%" or "xxxx-small". Not all browsers can deal with computed sizes.