         const dynamicSample = document.createElement('x-sample-dynamic');
          const dynamicContainer = document.createElement(
            'x-container-dynamic'
          );
          dynamicSample.shadowRoot.appendChild(dynamicDiv);
          dynamicContainer.shadowRoot.appendChild(dynamicSample);
          document
            .querySelector('x-container-dynamic')
            .shadowRoot.appendChild(dynamicContainer);
          requestAnimationFrame(() => {
            dynamicSample.shadowRoot
    