function renderWebpageRegion(region, regionContent) {
  var url = String(regionContent.value || '').trim();
  var iframe = url ? '<iframe src="' + escapeHtml(url) + '" title="' + escapeHtml(region.label) + '" loading="eager" referrerpolicy="no-referrer" scrolling="no"></iframe>' : '<div class="template-region-placeholder">Webpage</div>';
  return '<div class="template-region webpage" style="' + region.baseStyle + '">' + iframe + '</div>';
}