[SOLVED] Centering Text in Title

Hello...

First of all, I'd like to say what an AWESOME theme Atahualpa is! Thank you!

I'm a newb, so I hope this isn't a dumb question, but I can't seem to get part of my text on a page to center. The word "ABOUT" at the top of this page: http://www.workathomeguardian.com/about/ is set to center and displays that way in my "Edit Page" area, but once in a browser, it's off to the left. Can someone help me with this?

Here is the HTML code from that part of the page:

<h1 style="text-align: center;"><span style="color: #800080;">ABOUT</span></h1>

The layout is set at 98% fluid.

Any advice would be greatly appreciated!

Cheers,
-Curtis-