.container {
  display: grid;
  grid-template-columns: 80% 1fr;
  column-gap: 20px;
}

.heroBanner {
  grid-row: 1;
  grid-column: 1/3;
  margin-bottom: 0px;
}

.navigation {
  grid-row: 2;
  grid-column: 2;
}

.itemList {
  grid-row: 2;
  grid-column: 1;
}