MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */

body.page-Main_Page #mp-topbanner {
   clear: both;
}
body.page-Main_Page h1.firstHeading {
   visibility: hidden;
   font-size: 0;
}


.pg-periodic-system-of-actions {
  background-color: yellow;
  border: 1px solid;
  display: flex;
  align-items: flex-end;
  justify-content: left;
}
.pg-periodic-system-column {
  margin: 8px;
  border: 4px;
  background-color: blue;
  border: 1px solid;
}
.pg-periodic-system-cell {
  background-color: red;
  border: 1px solid;
  text-align: center;
}