This div spans 12 columns.

This div spans 1 column.

This div spans 12 columns.

This div spans 6 columns.

This div spans 1 column.

This div spans 2 columns.

This div spans 3 columns.

This div spans 4 columns.

There's only 2 columns here because that's all the space we have left.

This div spans 3 columns.

This div spans 4 columns.

This div spans 3 columns.

This div spans 2 columns.