style.css

main {
	max-width: 70ch;
	margin: auto;
}
pre {
	overflow-x: scroll;
}
sup a {
	text-decoration: none;
}
kbd {
	background-color: WhiteSmoke;
	border-radius: 2px;
	border: 1px solid Silver;
	box-shadow: 1px 1px 2px;
	display: inline-block;
	line-height: 1;
	padding: 2px 4px;
	white-space: nowrap;
}
table,
td {
	border: 1px solid Black;
}
thead,
tfoot {
	background-color: Black;
	color: White;
}
blockquote {
	margin: 0;
}
blockquote p {
	font-style: italic;
}
blockquote p::before {
	content: '\201C';
}
blockquote p::after {
	content: '\201D';
}
img {
	max-width: 100%
}

@media (prefers-color-scheme: dark) {
	body {
		background-color: Black;
		color: White;
	}
	a {
		color: LightSkyBlue;
	}
	a:visited {
		color: MediumPurple;
	}
	button:disabled {
		color: DarkGray;
	}
	kbd {
		box-shadow: 1px 1px 2px White;
		color: Black;
	}
	table,
	td {
		border: 1px solid DarkGray;
	}
	thead,
	tfoot {
		background-color: White;
		color: Black;
	}
}