body {
  background-color: honeydew;
}

.garden {
  display: grid;
  grid-template-columns: 400px 400px 400px;
  grid-auto-rows: 200px;
  grid-gap: 20px;
  margin: 30px 80px;
}


.grid-item {
  grid-column: 2 / 4;
  width: 200px;
  height: 200px;
  align-self: center;
}


@media (max-width: 1000px) {
  .garden {
    grid-template-columns: 1fr;
  }
}