row 1 block one entire width with top background darker
row 2 col 1 33%
row 2 col2 33%
row 2 col 3 33%
row 3 100%
row 4 c 25%
row 4 c2 50%
row 4 c3 25%
row 1 block one entire width with top background darker
row 2 col 1 33%
row 2 col2 33%
row 2 col 3 33%
row 3 100%
row 4 c 25%
row 4 c2 50%
row 4 c3 25%