1 of 2
2 of 2
3 of 3
1 of 3
2 of 3
3 of 3
100% wide until small breakpoint
100% wide until medium breakpoint
100% wide until large breakpoint
100% wide until extra large breakpoint
100% wide until extra extra large breakpoint
One of three columns
One of three columns
One of three columns
.col-9
.col-4
Since 9 + 4 = 13 > 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.
.col-6
Subsequent columns continue along the new line.