Lungo.js/vendor/node-jasmine-dom/node_modules/cssom/media.html

<style>
@media handheld, only screen and (max-device-width: 480px){
	html {
		color: black;
	}
}
</style>

<script>
window.onload = function(){
	if (document.styleSheets[0].cssRules[0].cssRules[0].parentRule === document.styleSheets[0].cssRules[0]) {
		document.body.innerHTML = "PASS parentRule";
	} else {
		document.body.innerHTML = "FAIL parentRule";
	}
}
</script>