* {
	box-sizing: border-box;
}

html > body {
	margin: 0;
	padding: 0;
	overflow: hidden;
	display: flex;
	justify-content: center;
	background: #EEE;
	color: #333;
}

main {
	width: 100%;
	height: 100%;
}


main > header {
	margin-top: 4rem;
}
main > picture > * {
	width: 100vw;
	width: 100dvw;
	height: 40vh;
	height: 40dvh;
}

section {
	margin-top: 4rem;
	text-align: center;
	font-family: Arial, Helvetica, sans-serif;
}

.src-only {
	display: none;
}

@media screen and (orientation:portrait) {
	main > picture > * {
		max-width: 100vw
	}
}

@media screen and (orientation:landscape) {
	main > picture > * {
		max-width: 100vw
	}
}

@media (prefers-color-scheme: dark) {
	html > body {
		background: #333;
		color: #EEE;
	}
}