t(4, auto) / repeat(5, auto);
  place-content: start;
  border: 1px solid;
}

.subgrid {
  display: grid;
  grid: subgrid / auto;
  gap: 10px 20px;
  background: lightgrey;
  grid-column: 2 / span 5;
  grid-row: 2 / span 5;
  min-width:10px;
  min-height:0;
  background: yellow;
}

.subgrid > * { background: lightgrey; }

x {
  min-width:10px;
  min-height:0px;
}
x:nth-child(2n+1) { background: silver; }
x:nth-child(2n+2) { background: magenta; }
x:nth-child(2n+3) { background: pink; }
x:nth-child(2n+4) { b