EXAMPLE
Run 
<!DOCTYPE html>
<html>

<head>
	<title>The content-visibility property in CSS</title>
	<style type="text/css">
		<style>
section {
  content-visibility: initial;
  contain-intrinsic-size: 20px 500px;
}
	</style>
</head>

<body>
	<section>Study Tonight</section>
	<section>Study Tonight</section>
	<section>Study Tonight</section>
	<section>Study Tonight</section>
</body>

</html>