The first column group spans the first three columns. The second column group only contains the last column.
The table column group background should be visible within the border edge of each cell originating in the column group. Within each column group, all stripes should line up as if the cells were cutouts in a stencil placed over the column group background. Furthermore, the horizontal stripes should also align across the two column groups.
A purple band should align with the top border edge of the cells in the first row. An aqua stripe should align a few pixels to the right of the left border edge of cells in the column group's leftmost column.
| TH A | TH B | TH C | TH D |
|---|---|---|---|
| TD M | TD O | TD P | |
| TD E | TD F | TD G | TD H |
| TD J | TD K | TD L | |
| TH A | TH B | TH C | TH D |
|---|---|---|---|
| TD M | TD O | TD P | |
| TD E | TD F | TD G | TD H |
| TD J | TD K | TD L | |