Some minor CSS changes

Tweaked the fonts a little, as I always thought they were a little small and therefore difficult to read.

Inspired after reading this article on dive into mark.

What do you think? Is it better? Any other suggestions for tweaks?

No promises mind, I don’t have as much time as I’d like to play with this, real life gets in the way!

The Some minor CSS changes by Simon Scullion, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Spain License.