.versions .dropdown-menu{max-height:260px; overflow-y:auto;}

fieldset > .content table tr.firstRow th{border-top-width: 2px;}
fieldset > .content table tr th { border-top: 1px solid #BBB;
  border-top-width: 1px;
  background-color: #F7F7F7;
}
fieldset > .content table tr th, fieldset > .content table tr td{ padding: 5px 10px; }