selectlist-default-button-slot-ref.html

<!DOCTYPE html>
<style>
.container {
  display: inline-flex;
  font-family: sans-serif;
  font-size: 0.875em;
}
</style>
<div class=container>
  <div>first child</div>
  <div>second child</div>
</div>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/forms/the-selectlist-element/selectlist-default-button-slot-ref.html