Any CSS gurus out there? Trying to center my main logo

Hey Guys

Any CSS gurus out there? Trying to center my main logo on this test site: http://ohtest.thinktaiwan.com/

The theme is "Observer" from Mojo Themes. If anyone can view that page source in chrome and tell me what I can possibly do to center that it would be wonderful.

The theme has tons of styling options and so not sure if it is easily possible to do this. Thanks for any help you can provide

Mik