header {
	text-align: center;
	padding-top: 35px;
}
header a {
	text-decoration: none;
}
main {
	padding: 35px;
	max-width: 800px;
	margin: 0 auto;
	min-height: calc(100vh - 300px);
}
h2, h3 {
	display: flex;
}
h2:before, h3:before {
	width: 20px;
	text-align: right;
	margin-right: 5px;
	margin-left: -25px;
}
h2:before {
	content: "::";
}
h3:before {
	content: ".";
}