Rounded panel with three-column grid and column separators

282 px
282 px
282 px

Rounded panels with two-column grids and column separators

596 px
282 px
282 px
596 px
439 px
439 px

Rounded panels with one full-width column

910 px

Two-column rounded panel with nested grids in each of the columns

50%
50%
25%
25%
25%
25%
33%
33%
33%

Transparent panels with three, two and one column grids

Semi-transparent background has been added to the columns to make them visible on this demo page.

282 px
282 px
282 px
596 px
282 px
282 px
596 px
439 px
439 px
910 px