EDIT: I did get this done a couple years ago by adding an Extra_Sidebar template, and modifying the Extra.css template (I had help), but the changes made seem to interfer with the responsive design. I'd like the extra_sidebar template removed for smaller mobile devices.
Question: The modification I made in 2013 was for a previous version of xenforo. Has the ability to add a sidebar to pages other than the forum list been added since then?
If not ...
How do I make the exra_sidebar template I added, "responsive?"
Thanks - And I hope I'm not too confusing.