1layout {
 2  gaps 10
 3  always-center-single-column
 4  background-color "transparent"
 5
 6  focus-ring {
 7    on
 8    width 2
 9  }
10  border {
11    off
12  }
13
14  preset-column-widths {
15    proportion 0.33333
16    proportion 0.5
17    proportion 0.66667
18  }
19  default-column-width { proportion 0.5; }
20}