Grid cards example

grid.css

.grid {
  display: grid;
  height: 100%;
  grid-template-columns: 2rem repeat(2, auto) 2rem;
  grid-template-rows: 4rem 4rem auto;
  background-color: #fff;
}

.layer1 {
  background-color: rgb(64, 213, 187);
  grid-column-start: 1;
  grid-column-end: span 3;
  grid-row-start: 1;
  grid-row-end: span 3;
}