.parent {
  display: grid;
  width: 300px;
  grid-template-columns: repeat(8, 9.81183%);
  justify-content: space-around;
}
.child:nth-of-type(odd) {
  border: 1px solid green;
  grid-column-start: 2;
  grid-column-end: 5;
}
.child:nth-of-type(even) {
  border: 1px solid green;
  grid-column-start: 5;
  grid-column-end: 8;
}