Forum:Can someone explain code?

Hi there, i'm a new Wikia Admin and I'll get right to the point.

I have absolutely zero idea what the advanced coding on Wikia for theme design is. I've used the simple theme designer but that doesn't seem to be the extent of customization. I see words like mediawiki or common.css and was wondering if someone could explain these and point me in the direction of a tutorial? Kozakuu 14:59, January 4, 2012 (UTC)
 * Wikipedia's help page and w3schools are both excellent. The latter provides a thorough, step–by–step into CSS and has a number of examples, along with documentation of other languages used on Wikia. 15:51, January 4, 2012 (UTC)