Header Menu moved down a bit

Hello,
after working a little bit at the website and then looking at it, the Menu was moved. The Header Menu Links are moved down a little bit when not on the homepage.
I have not really a idea where this comes from,maybe it has something to do with updating the Design, but I am not sure.

Please give me Instruction on how to repair it.

Thank you very much

Webiste: http://www.correggio.co