Hi Rachel
Sorry, to jump in but two quick notes here ...
1) the support forum is for things not covered in the training. Our aim is to teach you
www.ostraining.com/support-faq/Rather than do it for you, we will always to try to explain how you can do something. We'll guide you through the process, answer questions and write tutorials for you, but the focus will be on empowering you.
So, please do take advantage of the CSS course here:
www.ostraining.com/courses/class/coding/css/ 2) Any theme provider that doesn't answer questions isn't worth using. If they don't answer simple emails, they probably won't be providing security updates and other important services.
OK, back to the issue at hand ...
Ed is right on the code that is generating the white background. However, this might be a more complex theme that controls the CSS in more complicated ways.
Could you send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. with the theme files, please?