Allow to make column or container offcanvas for mobile devices.
This functionality can be enabled and set up in Advanced settings tab:
For mobile device entire column/container will replaced with Expand button. By click on this button, hidden content will slide in into viewport.
On the top of column/container content will be added Collapse button, which will hide content from viewport. Also you can make any element to work as Collapse button by adding offcanvas-collapse class to this element. This class make will wotk if you clicked directly on element with this class or on button inside element with this class.
