.active {
	color: grey;
}

body {
	padding-left: 10%;
	padding-right: 10%;
}

header {
	display: flex;
	justify-content: space-between;
}

nav {
	justify-content: flex-end;
}

hgroup a {
	text-decoration: none;
}

nav .current {
	color: grey;
}

a code {
	text-decoration: underline;
}

th {
	font-weight: bold;
}

.error {
	color: crimson;
}

section {
	scroll-margin: 2px;
}

section:focus-visible > :first-child {
	outline: 1px solid white;
}

.shortcut {
	text-decoration: underline;
}

.thumb {
	max-width: 60%;
}