third_party/blink/web_tests/display-lock/lock-before-append/update-without-acquire-fails-expected.html - chromium/src - Git at Google

 <!doctype HTML>

 <style>
 #container {
   contain: style layout;
   width: 150px;
   height: 150px;
   background: lightblue;
 }
 </style>

 <div id="log">PASS Element is unlocked.</div>
 <div id="container"></div>
	<!doctype HTML>

	<style>
	#container {
	contain: style layout;
	width: 150px;
	height: 150px;
	background: lightblue;
	}
	</style>

	<div id="log">PASS Element is unlocked.</div>
	<div id="container"></div>