chromium/third_party/blink/web_tests/external/wpt/css/css-view-transitions/navigation/transition-to-prerender-ref.html

<!DOCTYPE html>
<title>View transitions: basic cross-document navigation to a prerender (ref)</title>
<style>
html,body {
  margin: 0;
  width: 100%;
  height: 100%;
  background-color: limegreen;
}
div {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}
div.outgoing {
  background-color: cornflowerblue;
  transform: translateY(-55vh);
}
div.incoming {
  background-color: hotpink;
  transform: translateY(55vh);
}
</style>
<div class="incoming"></div>
<div class="outgoing"></div>