Just looked at this article and not been able to find the setting for what I need.
The page container is set to 1100 pixels but the sticky header is aligning right and left to the edges of the page.
Not sure if you can see it on a smaller screen as it won’t be as prominent.
I have recorded how it looks on my screen. I really want it to stay in line with the 1100 container. https://www.useloom.com/share/47cf7e194c5e435797a01b53b64b8a28