<!doctype HTML>
<html>
<meta charset="utf8">
<title>Content Visibility: hidden image (reference)</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">

<style>
div {
  background: blue;
  color: white;
}
img {
  width: 400px;
  height: 200px;
  background: lightblue;
  border: 1px solid black;
}
</style>

<div>Test passes if there are two pictures below: one of colored dices over a checkered back