### Thead/Tfoot/Tbody

    thead Row 1;
          background-color: cyan;     text-align: center;

    tbody Rows 2,3,4;
          background-color: #9999ff;  text-align: right;

    tfoot Rows 5, 6;
          background-color: #ff99ff;  text-align: center;

R1C1 | R1C2 | R1C3 | R1-2C4 | R1C5
R5C1 | R5C2 | R5-6C3 | R5-6C4 | R5C5
R6C1 | R6C2 | R6C5
R2C1 | R2C3 | R2C3 | R2C5
R3C1 | R3C2 | R3C3-5
R4C1-3 | R4C4 | R4C5