layout/reftests/css-invalid/fieldset/fieldset-nested-valid-invalid.html


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<!DOCTYPE html>
<!-- Nested fieldsets should be assigned validation correctly -->
<html>
  <head>
    <style>
      fieldset:valid { background-color: green; }
      fieldset:invalid { background-color: red; }
    </style>
  </head>
  <body>
    <fieldset>
      <fieldset>
        <input>
      </fieldset>
      <fieldset>
        <input required>
      </fieldset>
    </fieldset>
  </body>
</html>