@view-transition { navigation: auto; }
.site-header { view-transition-name: site-header; }
::view-transition-group(site-header),
::view-transition-old(site-header),
::view-transition-new(site-header) { animation: none; }
::view-transition-old(site-header) { display: none; }
@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}
::view-transition-old(root), ::view-transition-new(root) { animation-duration: 250ms; animation-timing-function: ease; }