main {
	background: url(../images/tunnel_of_clouds.webp);
	background-position: center;
	background-size: auto;
}
header {
	flex-direction: column;
	background: url(../images/sion_top.webp);
	background-position: top center;
	background-size: cover;
}
main, header, footer {
	flex-direction: column;
	text-align: center;
}