I feel a bit like a moron. So I ask for your help.
Please look here: www.joomlage.com/demos/joomlage_0118/index.php
When you click on a menu item, e.g. "Layouts", the article appears directly beneath the header block. This means that the backgroud photo is covered by the article.
In my setup the article is in the bottom part: to see it one has to scroll down or click on the center "down-arrow" ("v"). Obviously, my articles are in the bottom / base / footer posiiton.
(my website: albin25.eu )
Where may I control this?
Sorry for the beginner's question.
BR Ghaffy

Hello Ghaffy,

Solution - Fullscreen Header on the Homepage only
What you need to do is create 2 template styles.
Here is an example. In this example you will have the fullscreen background image header only on the homepage. All other pages will have normal header.
Create 2 styles.
1: One style for your homepage with fullscreen header set to YES in the templates Header Block Styling Parameters. Set this as the Home style in Menu assignment.
2: A second style with fullscreen header set to NO. Set this as default style.

Thanks,
JohnO

Fantastic, John!
Took me less than 5 minutes. Ha! Thank you for your quick and comprehensive help.
Superb support!
BR Ghaffy

You are welcome.

Thanks,
JohnO