Branding area moves when I go from shocase page to regular page

When I am on my homepage at http://www.hodgepodgerog.com (which is a showcase page)and then click on another page from my menu, the whole branding area shifts slightly to the right, and then when I click back to the home page, it shifts to the left.

Why is it doing this?

I want the branding area to remain totally static.

Thanks

-Roger