MediaWiki:Common.css

#mw-panel,
#mw-head,
#footer,
#catlinks,
#mw-page-base,
#mw-head-base,
#siteSub,
#contentSub,
.mw-editsection {
  display: none;
}

#content {
  margin: 0 auto;
  width: 100%;
  padding: 0;
  border: none;
  background: black;
  color: white;
}