chromium/third_party/blink/web_tests/external/wpt/css/selectors/focus-within-007-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Selectors Level 4: focus-within Reference File</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]">
<style>
  html, body, div {
      border: solid 5px green;
  }
</style>
<p>Test passes if, when the element below is focused, it is surrounded by a green border, and HTML and BODY elements also have a green border. There must be no red or blue once it is focused.</p>
<div>Focus this element</div>