Create sub-grids (darker background) on the fly, by dragging items completely over others (nest) vs partially (push) using
the new v7 API GridStackOptions.subGridDynamic=true
This will use the new delay drag&drop option DDDragOpt.pause
to tell the gesture difference
Note: gridstack-extra.min.css
is required for [2-11] column of sub-grids
Output