#contents {
	justify-content: center;
	align-items: center;
}

#block-selector {
	margin: 0 24px;
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
	align-items: center;
	gap: 24px;
}

.selector-node {
	padding: 24px;
	flex: 290px 0 0;
	height: 100%;
	display: flex;
	align-items: center;
	background-color: #fff;
	border: 1px solid #ddd;
	border-radius: 8px;
	color: #000;
	text-align: center;
	text-decoration: none;
}

.selector-node:hover {
	box-shadow: 0 0 8px rgba(0,0,0,0.2);
}