<svg xmlns="http://www.w3.org/2000/svg" width="500" height="500" class="reftest-wait">
<foreignObject width="500" height="500">
<iframe xmlns="http://www.w3.org/1999/xhtml"
srcdoc="A test">
</iframe>
<div xmlns="http://www.w3.org/1999/xhtml"
style="color: green" id="myDiv">This should remain green</div>
</foreignObject>
<script>
let el = document.getElementById('myDiv');
frames[0].onload = function() {
var doc = frames[0].document;
doc.body.appendChild(el);
document.documentElement.removeAttribute("class");
}
</script>
</svg>