body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

#grid {
  display: grid;
}

.cell {
  background-color: #e0e0e0;
  border: 1px solid #4b4a4a;
  display: flex;
  justify-content: center;
  align-items: center;
  aspect-ratio: 1 / 1;
}