body {
	display: flex;
	flex-direction: column;
	gap: 10px;
	align-items: center;
}

.container {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 500px;
	height: 500px;
	border: 2px solid black;
}

.row {
	display: flex;
}

.box {
	width: 20px;
	height: 20px;
	background: grey;
}

.box:hover {
	background: black;
}

.title {
	text-align: center;
}