:root {
	--background-colour: grey
}
html,
body {
	margin: 0;
	background-color: var(--background-colour);
}
* {
	box-sizing: border-box
}
nav {
	position: fixed;
	right: 0;
	top: 0;
	bottom: 0;
	background-color: rgba(0, 0, 0, 0.8)
}
nav div {
	display: table;
}
nav div a,
nav div a:visited {
	display: table-row;
	color: white
}
nav div a span {
	display: table-cell
}