body.dark-active.not-at-top #t4-header.t4-sticky {
  background-color: #000;
   --headings-color: #fff;
  -webkit-box-shadow: 0 3px 5px rgba(0, 0, 0, 0.08);
          box-shadow: 0 3px 5px rgba(0, 0, 0, 0.08);
}