as soon as I posted this comment I discovered that I needed to set the max. site width to 1600 px (in Layout & Design) to avoid margins on high resolution screens.
Could you confirm that all changes to the blog structure should be made in the child theme by copying the framework > views > CURRENT_STACK to the child theme and changing files within this folder, e. g. content.php etc. Designwise I would add code to Global CSS or child themes CSS?
As I understood there are no page templates for blogs (every blog post has the same page layout) and changes to the layout are being made in framework > views > CURRENT_STACK (on Pro)?
Sorry for sounding a bit confused but I am still new to this and have already spent some time searching in this forum for answers. And setting up the blog structure still gives me some headaches.
Thanks and best regards, Lennart