Sweet! Thanks, I got it all figured out.
Glad we could help.
Though, looking at your wiki, I would recommend not to decrease the line height (it looks pretty cramped otherwise) but to increase the paragraph spacing instead - e.g. like this:
#content p { margin-bottom: 1em; }
As an aside, please take a look at the following excerpt from the weekly posting "Welcome to mediawiki-l":
When creating a new thread, do not reply to an existing message and change the subject. This will confuse peoples' mail readers, and will people reading your mail. Instead, compose a new message for your result in fewer post.
(I don't mean to offend, only to inform.)
-- F.