Blog title and tagline overlayed on image shift down from home page to other pages

I have the blog title and tagline overlaid in the image area. I have centered them using the information provided in the Header Image options including the CSS insert. The title and tagline are positioned correctly on the home page http://gemcnonline.com but shift down to bar1 on all other pages.

I have tried searching other posts and read through those related to formatting the blog title and tagline but I have not been able to find the answer.

It's not a big deal except I would expect the same style sheet formatting to apply from page to page.

Thanks.