How to get more full width banners

In the demo template there are 3 other banners in full width. How can I get these working.

Header and footer banner work fine but any other position will not show full width.

I think it's not possible to get a full width banner in a module position. Instead I have now inserted a background image in position bottom-a.
This now is full-width but somehow not full height? How do I change the height??

Hi there,
please make sure that your module style is set to "blank" to get a full width module.
>> Template options > Module > Styles