Template:Highlight/core/sandbox/style.css

.text-highlight {
	background-color: yellow;
	color: var(--color-base, black);
}

@media screen {
	html.skin-theme-clientpref-night .text-highlight {
		background-color: #653306;
	}
}

@media screen and (prefers-color-scheme: dark) {
	html.skin-theme-clientpref-os .text-highlight {
		background-color: #653306;
	}
}