Grid Collapse

Margin Grid Collapse

Gutters should collapse on large.

12
11
1
10
2
9
3
8
4
7
5
6
4

Large margin collapse

10/8/6 cells
2/4/6 cells

Medium margin collapse

10/8/6 cells
2/4/6 cells

Small margin collapse

10/8/6 cells
2/4/6 cells

Padding Grid Collapse

Gutters should collapse on medium.

12
11
1
10
2
9
3
8
4
7
5
6
4