User:Ocee/monobook.css

CSS required
{   position: relative; float: left; }
 * 1) p-cactions li

{   float: none; display: block; border: 1px solid #aaaaaa; border-top: none; text-align: center; background: #F8FCFF; background-color: #F8FCFF; }
 * 1) p-cactions li li

.tabmenu ul { display: none; z-index: 2; position: relative; top: -2px; border-top: 1px solid #aaaaaa; padding: 0px; margin: 0px; background: #F8FCFF; background-color: #F8FCFF; }

.tabmenu:hover ul { display: block; }

.tabmenu a { padding: 0pt 0.8em !important; background: #F8FCFF; background-color: #F8FCFF; }

.tabmenu ul a:hover {   font-weight: bold; }