MediaWiki:Common.less/prefs.less

.mw-prefs-buttons {

   background-color: var(--body-main);
   border-top-color: var(--body-border);
   box-shadow: none;

}

.mw-prefs-tabs-wrapper.oo-ui-panelLayout-framed, .mw-prefs-tabs > .oo-ui-menuLayout-content > .oo-ui-indexLayout-stackLayout > .oo-ui-tabPanelLayout {

   border-color: var(--body-border);

}

.mw-htmlform-ooui .mw-htmlform-matrix tbody {

   tr:nth-child(even) td,
   tr:nth-child(even):hover td {
       background-color: var(--body-light);
   }

   tr:hover td {
       background-color: var(--body-mid);
   }

}