Template:If darkmode/styles.css

html:not(.skin-theme-clientpref-night) .ifdarkmode > .isdarkmode {
    display: none;
}

html.skin-theme-clientpref-night .ifdarkmode > .nodarkmode {
    display: none;
}

@media (prefers-color-scheme: dark) {
    html.skin-theme-clientpref-os .ifdarkmode > .nodarkmode {
        display: none;
    }
}