body {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.grid {
  margin: 0;
  padding: 1rem;
  display: grid;
  grid-template-columns: repeat(7, 6rem);
  gap: 1rem;
  list-style-type: none;
  border-radius: 0.5rem;
}

.cell {
  display: block;
  width: 6rem;
  height: 6rem;
  background-color: hsl(0, 0%, 90%);
}