<html> This test scrolls the iframe body by fractional scroll offset but the fixed position element should stay fixed
<body style='height:2000px'>
<iframe srcdoc="
<body style='width:1000px;height:2000px;background-color:green'>
<div style='position:fixed; background-color:red; width: 100px; height: 100px; top: 0px; left: 0px;'> </div>
<input type='checkbox' style='margin-top:100px'> the checkbox should not be blurred
</body>
<script>
window.scrollTo(0, 0.0)
</script>
"</iframe>
</body>
</html>