@media (prefers-color-scheme: light) {
body {
	background-color: #ffc;
	color: #000;
}
a {
	color: #099;
}
a:visited {
	color: #c3c;
}
}
@media (prefers-color-scheme: dark) {
body {
	background-color: #003;
	color: #fff;
}
a {
	color: #ff9;
}
a:visited {
	color: #f99;
}
}
#content {
	min-height: calc(100vh - 200px);
}
#mpring {
	margin-left: calc(50% - 100px);
	border: 0;
}