chromium/third_party/blink/web_tests/external/wpt/css/css-layout-api/style-map-ref.html

<!DOCTYPE html>
<style>
.result {
  background: green;
  margin: 10px;
  margin-left: 2px;

  width: 100px;
  height: 100px;
}
</style>

<div class="result"></div>
<div class="result"></div>
<div class="result"></div>
<div class="result"></div>