I'm pretty new to CSS (still basic in HTML too, learned it 20 years ago and didn't use it much) and I'm trying to figure out if I can make my responsive sidebar sticky at top position when scrolled down (while the responsive action moves the sidebar to the top).
Best example would be : https://www.w3schools.com/howto/howto_css_sidebar_responsive.asp
As an additional thing, I would like to have a sticky header (top container) added to that. So I get a full frame (yeah I used to work with frames back in the time) at the top containing a logo on the left and some text on the right (would probably be ugly on mobile though, unless I can make it responsive to reduce the logo size and text format / hide text). The top container should not be over/under the sidebar when the sidebar moves to the top. The sidebar should be below the top container and be sticky. The top container on smaller screen does not have to be sticky. That would be amazing but it's not a top priority for now.
Thanks to anyone that can help!