I figured it out! - I had to rebuild the side again STARTING with draging the site-style into the page. Then I copied bit by bit back intio the page, and now the changes I do in the site-style have the wanted effect. It didn’t workt when draging the side-style intio the page afterwards. -
I still often have to completely restart the software to see the changes in the preview. That’s a bug in my eyes. 