Sure, you can nest columns inside of columns: if your wider column is @include span(8 of 12);, for example, you could put two columns inside of that using @include span(4 or 8); on each of those.
Sure, you can nest columns inside of columns: if your wider column is @include span(8 of 12);, for example, you could put two columns inside of that using @include span(4 or 8); on each of those.