bootstrap grid system col-sm-offset
Regardless of what, that offset is to say "hey, leave some gaps/space" for me. For example, say we have a grid of col-sm-10 and i specify col-sm-offset-2, that gives me something like a full grid with 2 2 column is reserved for spacing.
This is a good way to see this would be looking at example below :-
Was abit confusing, initially but I guess offset would have been ok.