lucy24 - 9:49 am on Dec 2, 2011 (gmt 0)
We'll need to see a bit of the html that calls the css.
Also note that very small changes in font size can be iffy. Anything less than 5% simply may not show up, unless the font is pretty large to start with. Fetch out the calculator: what's 103% of 14? The browser may well decide it's ... 14.