<!DOCTYPE html>
<html>
<head>
<style>			
*:first-child {
	display: table;
	counter-increment: foo2;
}

* {
	display: inline;
	-webkit-appearance: unset;
	visibility: hidden;
}
			
:nth-last-child(1) {
	counter-reset: foo1;
}
</style>
</head>
<body>
<div id=firstDiv></div>
<div id=secondDiv></div>
<div style="visibility: visible">Pass if no crash.</div>
</body>

<script>
if (window.testRunner)
    testRunner.dumpAsText();
    
document.body.offsetHeight;

let div = document.createElement('div');
div.appendChild(document.body.cloneNode(true))

document.styleSheets[0].addRule('#firstDiv::after','content: counter(foobar)');

secondDiv.appendChild(document.createElement('input'))
firstDiv.appendChild(div);
</script>
</html>