chromium/third_party/blink/web_tests/external/wpt/css/css-layout-api/position-fragment/ref.html

<!DOCTYPE html>
<style>
.result {
  position: relative;
  background: green;
  width: 100px;
  height: 100px;
}

.result-child-1 {
  background: rebeccapurple;
  width: 10px;
  height: 20px;

  position: absolute;
  top: 25px;
  left: 5px;
}

.result-child-2 {
  background: rebeccapurple;
  width: 15px;
  height: 25px;

  position: absolute;
  top: 60px;
  left: 50px;
}
</style>
<div class="result">
  <div class="result-child-1"></div>
  <div class="result-child-2"></div>
</div>