frame.addEventListener("load", resolve));
  document.body.appendChild(iframe);
  await iframeLoaded;
  const thirdDiv = firstDiv.cloneNode(true);
  iframe.contentDocument.body.appendChild(thirdDiv);
  const greenIframeSpan = thirdDiv.children[0];
  const redIframeSpan = thirdDiv.children[1];
  const blueIframeSpan = thirdDiv.children[2];
  const whiteIframeSpan = thirdDiv.children[3];
  const yellowIframeSpan = thirdDiv.children[4];

  // Make sure both the main Document and the iframe are not styled
  cons