Width:

1 row, 6 columns | 2 rows, 3 columns | 3 rows, 2 columns | 6 rows, 1 column
>=1170px | >=970px | >=750px | >=0px

Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6

1 row, 3 columns | 3 rows, 1 column
>=970px | >=0px

Cell 1
Cell 2
Cell 3

1 row, 2 columns | 2 rows, 1 column
>=750px | >=0px

Cell 1
Cell 2

1 row, 3 columns, 2 columns with Offset | 2 rows, 1 column
>=970px | >=0px

Cell 1
Cell 2
Cell 3

1 row, 6 columns, ".big" CSS class applied to all columns. | 2 rows, 3 columns, ".medium" CSS class applied to all columns. | 3 rows, 2 columns, ".small" CSS class applied to all columns. | 6 rows, 1 column, ".x-small" CSS class applied to all columns.
>=1170px | >=970px | >=750px | >=0px

Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6