seirdy.one/assets/css/dark.css

@media (prefers-color-scheme: dark) {
	/* I've been told that pure white on black is a bit harsh */
	html {
		color: #e9e9e9;
	}

	html {
		/* "background" is short for a bunch of unnecessary CSS rules
		 * background-color is all I need */
		background-color: #111;
	}

	/* Only color <a> if it's a link; if href is empty, let it be. */
	a:link {
		color: #f1e6af;
	}

	a:active {
		color: #b93;
	}

	a:visited {
		color: #ffd6ff;
	}

	sup a:link {
		color: #f3f0cb;
	}

	sup a:visited {
		color: #ffdfff;
	}

	:not(pre) > code,
	:not(pre) > samp {
		border-color: #555;
	}

	/* stylelint-disable -- hasn't heard of "prefers-contrast" yet */
	@media (prefers-contrast: less) {
	/* stylelint-enable */
		html {
			background-color: #222;
		}
	}
}