Forum:How to remove the big spaces on articles?

I'm an admin on Half-Life wiki, after a few days on being on the wiki, I noticed that many pages have huge spaces.

Example:
 * Wiki activity, You can see huge spaces on the "Community Messages" message.
 * this article, You can see the spaces in the title.
 * Userbox, You can see the spaces in the userbox.

How can I fix that? 21:16, August 5, 2012 (UTC)
 * This CSS should fix it (put it in w:c:Half-life:MediaWiki:Wikia.css):
 * --  Random Time  21:24, August 5, 2012 (UTC)
 * Doesn't work. 21:31, August 5, 2012 (UTC)