Hi Were you able to take a look at these issues:
1, The outline that runs into the "Details" header. How do I get rid of it (see pm)
2, Take a look at the home page, look at the "Login" link and "Search" window at the top right (mast head section). Take note of the size of the font. Now login using the login info in the pm. Look at the same area (it will now say Welcome Peter / Logout) notice how the font size increases in the admin section (second link in section to in pm)
It also increases at the bottom navigation of these pages. If you click back to the home page or any of the other pages (not including Products section) the font returns back to the correct size.