MediaWiki:Group-user.css

/* CSS placed here will affect registered users only */
div.user-show,
p.user-show {
  display: block !important;
}
span.user-show,
small.user-show {
  display: inline !important;
}
table.user-show {
  display: table !important;
}
li.user-show {
  display: list-item !important;
}