chromium/third_party/blink/web_tests/paint/invalidation/outline/focus-ring-for-anchor.html

<!DOCTYPE html>
<style>
  body {
    margin: 0;
    padding: 0;
    font-size: 17px;
    line-height: 20px;
  }
  a {
    width: 80px;
    height: 80px;
    outline: red auto thin;
    background: yellow;
  }
  a.relative {
    position: relative;
  }
  a.absolute {
    position: absolute;
  }
  a.block {
    display: block;
  }
  div {
    position: absolute;
    width: 80px;
    height: 80px;
    top: 40px;
    left: 40px;
  }
</style>

<a href="#" class="relative">Click
  <div style="background-color: blue;">
    <div style="background-color: green;"></div>
  </div>
</a>

<a href="#" class="relative block" style="top:180px;">Click
  <div style="background-color: blue;">
    <div style="background-color: green;"></div>
  </div>
</a>

<a href="#" class="absolute" style="top:400px;">Click
  <div style="background-color: blue;">
    <div style="background-color: green;"></div>
  </div>
</a>