I've been writing a series of pure  css skins using relative font sizes - ems.. and having a few problems.

Is there anyone who has implemented ems throughout their skins who can give advice..

 

I can't give advice on ems, but I can on using percentages. - I previously used ems before switching to the percentages method and I find using percentages much easier to conifgure and maintain.

You can watch a tutorial on how I configured this here:
How to create a pure CSS skin

and you can view the skin that implements this from:
Free Skin - Simple Red Leaf CSS Skin

Thanks,