n two current engines.">⚠</b><span>MDN</span></summary>
   <div class="feature">
    <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/states" title="The states read-only property of the ElementInternals interface returns a CustomStateSet representing the possible states of the custom element.">ElementInternals/states</a></p>
    <p class="less-than-two-engines-text">In only one current engine.</p>
    <div class="support">
     <span class="firefox no"><span>Firefox</span><spa