body {
  background-color: #111;
  color: #f0f0f0;
  font-family: 'Courier New', Courier, monospace;
  text-align: center;
  padding: 40px;
}

.container {
  max-width: 400px;
  margin: auto;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  gap: 5px;
  justify-content: center;
  margin: 20px auto;
}

.cell {
  background-color: #222;
  color: #ffd700;
  font-size: 2.5rem;
  border: 2px solid #444;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.cell:hover {
  background-color: #333;
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  background-color: #ffd700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background-color: #e6c200;
}