third_party/blink/web_tests/display-lock/context-two-suspend-resume-expected.html - chromium/src - Git at Google

 <!doctype HTML>

 <style>
 #parent {
   contain: paint;
   width: 150px;
   height: 150px;
   background: lightblue;
 }
 #child {
   width: 50px;
   height: 50px;
   background: lightgreen;
 }
 </style>

 <div id="log">PASS</div>
 <div id="parent"><div id="child"></div></div>
	<!doctype HTML>

	<style>
	#parent {
	contain: paint;
	width: 150px;
	height: 150px;
	background: lightblue;
	}
	#child {
	width: 50px;
	height: 50px;
	background: lightgreen;
	}
	</style>

	<div id="log">PASS</div>
	<div id="parent"><div id="child"></div></div>