MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */
/* Changes the background color of the bottom and left of each page, up to behind half of the logo: */
body {
  background: default;
  /* filter: invert( 1 ) hue-rotate( 180deg ) */
}

/* Changes the background color behind the top half of the logo and at top of each page: */
#mw-page-base {
  background: default;
}