<!DOCTYPE html>
<html class="reftest-wait">
<style type="text/css">
.hidden {
display: none;
}
body {
background-color: green;
}
</style>
<body>
<iframe id="iframe" src="data:text/html,%3Cspan%3EJust%20a%20simple%20little%20iframe.%3C%2Fspan%3E"></iframe>
</body>
<script type="text/javascript">
window.onload = function() {
document.getElementById("iframe").classList.add("hidden");
document.documentElement.classList.remove("reftest-wait");
}
</script>
</html>