2 last quesions

I tested again in your customizer, preview seems good.

Could you confirm the result in the video is what you are looking for?
https://www.screencast.com/t/reQTcIfLxl5k

Let me know :)

Yes that is the result i am looking for :)

I take the CSS code from the video, and it works :)

How can i make the menubar 100% width? That is the really last point :D

thanks! :)

The menu bar doesn't go full width is because the margin you added to the body:
https://www.screencast.com/t/j67HyWP6z

Try replace the body with #page.

Let me know :)

i did it :) Thanks for all your helpfulness, for now the website is okey :)

Glad to hear that :)