body {
  background-color: #444;
  font-family: Arial, Helvetica, sans-serif;
  justify-content: space-between;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--cell-size));
  grid-template-rows: repeat(var(--rows), var(--cell-size));
  margin: 0 auto;
}

.cell {
  width: var(--cell-size);
  aspect-ratio: 1 / 1;
  border: 1px solid #888;
  background-color: white;
}

/* Import a retro pixel font (optional) */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

h1 {
  color: chartreuse;
}

#buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 1em 0;
}

#buttons button {
  font-size: 10px;
  padding: 8px 16px;
  color: #00ff00; 
  background-color: #000;
  border: 2px solid #00ff00;
  text-transform: uppercase;
  cursor: pointer;
  outline: none;
}

#buttons button:hover {
  background-color: #00ff00;
  color: #000;
}

#buttons button:active {
  transform: translateY(1px);
}