MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */
body {
background-image:  url("https://cdnstatic.bethsoft.com/creationkit.com/fallout-screened-smaller.jpg");
}

div#p-navigation, div#p-tb {
  background-color: rgba(255,255,255,.5);
}
#footer {
  background-color: rgba(255,255,255,.3);
}