Forum:Placing pictures to the center?

Hey! I really new here and I'm not sure how everything works or if the forums are still active, but---

I'm the Head-Mod of a Role-Play group on the art blog, Tegaki-E. Another mod in the group suggested we have a wiki since the group has been so successful. We're trying multiple wikis to see what works best.

Taking a sample made by another mod from the last 'wiki' we tried, but to my dismay I couldn't get the picture in the center of the article!

This is what we're trying to achieve: http://legendofzeldate.pbworks.com/w/page/41447917/Welcome

It's the triforce (yellow thing) we're trying to get it.

Is there a way to do this? If there isn't It would be helpful if there was an option.

Thank you!
 * Hi! The wiki seems to has nothing to do with Wikia and nor is it hosted by Wikia, the forums are for Wikia-base wikis only, please ask your own local users on your host (if they have a forums or ask them personally). Thank You for asking on our forums.
 * -- 11:00, July 4, 2011 (UTC)