MediaWiki:Common.css

/* CSS placed here will be applied to all skins */
p {
  background: red;
  line-height: 0.2;
  font-family: monospace, Courier;
  style="line-height: 1.2;"
}

p::before {
  font-weight: bold;
  color: navy;
  content: 'style="line-height: 1.2;"';
}