Add attributes to table cells.

This cell spans 2 columns and has an utility class. Column 3 Column 4
Row 1 R1C1 R1C2 This cell spans 2 columns and has an utility class.
Row 2 R2C1 R2C2 This cell spans 2 columns, 2 rows and has an utility class.
Row 3 R3C1 R3C2
Footer This cell spans 2 columns and has an utility class. FC3 FC4