I have run into the same problem. I am using sections but would like to have a floating sidebar on the right hand side. I would like it to look like http://www.bendigodogtraining.com.au with the floating sidebar, only I would be using sections which I was not there.
For exapmle in my page http://www.campaspeworkingdogs.com/wordpress/sires where I am using sections I would like to have a floating sidebar on the right hand side. Password to get into site is cwdtw2016!