chromium/src/third_party/blink/web_tests/scrollbars/resources/page-with-custom-scrollbars.html - manifest_repos/chromium_src - Git at Google

 <html>
 <head>
 <style>
 ::-webkit-scrollbar {
     width: 13px;
     height: 13px;
 }

 .box {
     background: gray;
     width: 4000px;
     height: 4000px;
 }
 </style>
 </head>
 <body>
 <P class="box">PASS</p>
 </body>
 </html>
	<html>
	<head>
	<style>
	::-webkit-scrollbar {
	width: 13px;
	height: 13px;
	}

	.box {
	background: gray;
	width: 4000px;
	height: 4000px;
	}
	</style>
	</head>
	<body>
	<P class="box">PASS</p>
	</body>
	</html>