.reveal .slide-logo {
  height: min(19vw, 28.6vh) !important;  
  width: auto !important;
  max-width: unset !important;
  max-height: unset !important;
  position: fixed;
  top: 5px;
  right: 12px;
  bottom: unset !important;
  left: unset !important;
  z-index: -999 !important;
}

.reveal .slides section.logo-clear {
  padding-right: 230px;
}