Forum:How do I remove this white area?

I recently created my wikia on http://pt-br.aika.wikia.com, when I first started to edit the MediaWiki:Monaco.css I faced this issue: There's a white area behind the the logo. The logo is transparent so I have no idea why this is happening. Could someone help me, please? I'm sure this is some stupid question, but apparently I can't figure it out by my own. Thank you in advance.
 * Put this in the CSS:

background: transparent; border-bottom: none; }
 * 1) background_strip {

border: none; }
 * 1) wikia_header {
 * It will make the background transparent and get rid of the border on the top and the bottom. fingernails 02:53, August 13, 2010 (UTC)