.quarto-title-block .quarto-title-banner {
  background-image: 
    url('logos/NABat.png'),
    url('logos/BP-Logo-Hz-invert-notag.png');
  background-size: 
    200px,
    375px;
  background-position: 
    left,
    right;
  background-repeat: no-repeat;
  padding-left: 10px;
  padding-right: 10px;
  background-origin: content-box;
}