body {
  text-align: center;
  font-family: Arial;
  background: #f2f2f2;
}

.board {
  width: 300px;
  margin: 40px auto;
  display: grid;
  grid-template-columns: repeat(3, 100px);
  gap: 5px;
}

.cell {
  width: 100px;
  height: 100px;
  background: white;
  font-size: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.cell:hover {
  background: #e6e6e6;
}
