.board {
  display: grid;
	grid-template-columns: repeat(3, 100px);
	grid-template-rows: repeat(3, 100px);
	gap: 5px;
	margin-top: 20px;
}

.cell {
	background-color: #f0f0f0;
	font-size: 2rem;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	bottom: 1px solid #ccc;
}