Thank you for your answer.
The page body has to be 100%, the menu background too, just the menu items should not exceed 80% and be aligned left. In other words, the menu entries have to start 10% from left.
Please have a look on my picture, you will see what I mean.
I can edit padding and margin, but the problem is that margin and padding only accept px. Same problem for the logo, which has to start 10% from the left.
When I use fixed values (px), the fluid layout will break, won't it?
I can align it with additional CSS, but it would be nice to set such essential parameters in TT.
Cheers, Michael