Javascript iFrame
From https://www.dyn-web.com/tutorials/iframes/
<style>
iframe#ifrm {
width: 50%;
margin: 0 25%;
height: 150px;
border: 1px solid #ccc;
margin-top: .8em;
}
</style>
<div id="framer"></div>
<script>
var ifrm = document.createElement('iframe');
ifrm.setAttribute('id', 'ifrm'); // assign an id
// document.body.appendChild(ifrm); // to place at end of document
// to place before another page element
var el = document.getElementById('framer');
el.parentNode.insertBefore(ifrm, el);
// assign url
ifrm.setAttribute('src', 'https://denvergeeks.com');
</script>