Integration question.

Hi

I have been practising for a new days on how to successfully Integrate WHMCS and Im nearly there. But one thing keeps striking me and I cant figure it out.

Link: http://integratemysite.com/dev/
User: dev
Pass: whmcs

The header and footer turn out well, for both Default and Portal theme however the middle content is also not aligned, to the left and is not formatted correctly as you can see.

There must be something Im missing here...

Any ideas?

Thanks