CSS Grid Generator

.grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 10px;
  justify-items: stretch;
  align-items: stretch;
  justify-content: start;
  align-content: start;
}

.grid-item {
  min-height: 100px;
  padding: 1rem;
}