MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */
@media screen {
  html.skin-theme-clientpref-os and (prefers-color-scheme: dark) {
    --background-color-neutral-subtle: #101418;
  }
}

@media screen {
  html.skin-theme-clientpref-night {
    --background-color-neutral-subtle: #101418;
  }
}