Forum:Glowing

Once I entered a Wikia that all about Studio Ghibli animations. I noticed the edge between the page and the background were "glowing". I was wondering how did they do it, did they adjust MediaWiki or something inside the wiki so that it could be like this?? Sango 珊瑚 (The demon exterminator) 15:23, October 4, 2012 (UTC)