.game-board {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.row {
  display: flex;
}

.cell {
  width: 50px;
  height: 50px;
  border: 1px solid black;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  cursor: pointer;
}

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