clip-path-animation-polygon-ref.html

<!DOCTYPE html>
<html>
<style>
  .container {
    width: 100px;
    height: 100px;
    background-color: green;
    clip-path: polygon(10% 10%, 90% 10%, 50% 90%);
  }
</style>

<body>
  <div class="container"></div>
</body>

</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-masking/clip-path/animations/clip-path-animation-polygon-ref.html