html, body, .viewport {
	width: 100%;
	height: 100%;
	margin: 0;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 16px;
}

.vbox {
	display: flex;
	flex-direction: column;
}

.centerlogo {
	display: flex;
	flex-direction: row;
	flex: 5;
	height: 100%;
	align-items: center;
	justify-content: center;
}

img {
	max-width:100%;
	max-height: 75vh;
	height:auto;
}

footer {
	height: 8vh;
	padding: 0;
	color: grey;
	text-align: center;
	font-family: Arial, Helvetica, sans-serif;
	font-size : clamp(1rem, 4vh, 1.5rem);
}