chromium/third_party/blink/web_tests/external/wpt/css/motion/offset-path-shape-xywh-003-ref.html

<!doctype html>
<meta charset="utf-8">
<title>CSS Motion Path test reference: offset-path:xywh() path with explicit arguments and padding-box</title>

<style>
#outer {
  top: 100px;
  left: 100px;
  position: relative;
  width: 200px;
  height: 100px;
  padding: 50px;
  border: 50px solid black;
}
#box {
  background-color: green;
  transform: translate(200px, 10px) rotate(90deg);
  border-radius: 50% 50% 0 0;
  width: 100px;
  height: 100px;
}
</style>

<div id="outer">
  <div id="box"></div>
</div>