test 2:

original:
<script> function resizeIframe(obj) { obj.style.height = obj.contentWindow.document.documentElement.scrollHeight + 'px'; } </script> <style>iframe { display:block; } </style>

test 1 (which still slightly cuts off my iframes) may be my CSS inteferringggg
<script> function resizeIframe(obj) { setTimeout(() => { obj.style.height = obj.contentWindow.document.documentElement.scrollHeight + 'px'; }, 100); } </script> <style> iframe { display: block; width: 100%; min-height: 400px; /* Adjust as needed */ overflow: hidden; } </style>