prismjs/plugins/inline-color/prism-inline-color.css

span.inline-color-wrapper {
	/*
	 * The background image is the following SVG inline in base 64:
	 *
	 * <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 2 2">
	 *     <path fill="gray" d="M0 0h2v2H0z"/>
	 *     <path fill="white" d="M0 0h1v1H0zM1 1h1v1H1z"/>
	 * </svg>
	 *
	 * SVG-inlining explained:
	 * https://stackoverflow.com/a/21626701/7595472
	 */
	background: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyIDIiPjxwYXRoIGZpbGw9ImdyYXkiIGQ9Ik0wIDBoMnYySDB6Ii8+PHBhdGggZmlsbD0id2hpdGUiIGQ9Ik0wIDBoMXYxSDB6TTEgMWgxdjFIMXoiLz48L3N2Zz4=");
	/* This is to prevent visual glitches where one pixel from the repeating pattern could be seen. */
	background-position: center;
	background-size: 110%;

	display: inline-block;
	height: 1.333ch;
	width: 1.333ch;
	margin: 0 .333ch;
	box-sizing: border-box;
	border: 1px solid white;
	outline: 1px solid rgba(0,0,0,.5);
	overflow: hidden;
}

span.inline-color {
	display: block;
	/* To prevent visual glitches again */
	height: 120%;
	width: 120%;
}