Typical grid

2 columns
5 columns
3 columns
2 columns
1 column
1 column
1 column
1 column
1 column
1 column
1 column
1 column
1 column
1 column
1 column
1 column

Offsets

4 columns
4 columns
4 columns

No column gutters

.l-row.m-gutterless
6 columns
6 columns
6 columns

No row

equivalent to .l-row.m-gutterless
6 columns
6 columns
6 columns

Nested row

l-col m-3
l-col m-3
l-col m-3
l-col m-3
l-col m-3
l-col m-3
l-col m-3

Forced pixel grid

.l-container.m-pixel with no row
.l-col-m-6
.l-col-m-6
.l-col-m-6
.l-col-m-9

Nested grid: 6 columns in a 9 column cell

.l-col-m-2-of-6
.l-col-m-2-of-6
.l-col-m-2-of-6
.l-col-m-3