content-visibility-animation-becomes-visible-ref.html

<!DOCTYPE html>
<html>
<title>Test that making a content-visibility: hidden subtree visible restarts animations in it</title>
<link rel="author" title="Rob Buis" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-contain-2/">

<style>
#target {
  position: relative;
  background: green;
  height: 100px;
  width: 100px;
  left: 100px;
}
</style>
<body>
  <div id="target"</div>
</body>

chromium/third_party/blink/web_tests/external/wpt/css/css-contain/content-visibility/content-visibility-animation-becomes-visible-ref.html