third_party/blink/web_tests/fast/backgrounds/root-background-propagation3.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <style>
   html, body { background: inherit }
   .red { background: red }
 </style>
 <body class="red">
 You should see no red.
 <script>
   document.body.offsetTop;
   document.body.className = "";
 </script>
	<!DOCTYPE html>
	<style>
	html, body { background: inherit }
	.red { background: red }
	</style>
	<body class="red">
	You should see no red.
	<script>
	document.body.offsetTop;
	document.body.className = "";
	</script>