Very strange – looks like you just need to set your “post” featured image to above the content area. Go to “Customize > Layout > Blog” and you should see the Featured Image options π
OK. But I don’t want that, because that would affect all the featured image on the posts on the site. I only want this to affect the page headers in this category.
I’m sorry I did not read this part “Content is required for the below settings to work.”
It would be good if you could place a background without content and allow to change the color of the menu