Header Full Width problem

As you can see from my screenshot the Header layout is aligned to the left and not using the headers full width: https://imgur.com/a/GeWU5
This is my setting: https://imgur.com/a/cdlKk

I have tried every possible layout but something must be wrong. When using "Stack: Right it looks like this: https://imgur.com/a/bzcfL

I would like it to look something like this: http://themes.muffingroup.com/be/vegetables/
Or this: http://themes.muffingroup.com/be/meeting/


Any advises are appreciated.