centre menu without logo

Hello,

I use customizr theme and I’m very glad with it.
But one thing I can’t find is to centre the menu over the whole with, without a logo.
I know how to centre the menu, but it takes space for a logo that I don’t want.
I looked several posts, but I don’t see a solution.

The sites are : http://www.kasteelgeulzicht.nl and http://www.castlehotelholland.eu.

Thanks!