<!doctype HTML>
<html>
<meta charset="utf8">
<title>CSS Content Visibility: container with child and text (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>
#container {
  width: 150px;
  height: 150px;
  background: lightblue;
  contain: layout;
}
#child {
  width: 50px;
  height: 50px;
  background: lightgreen;
}
.abspos { position: absolute; }
.relpos { position: relative; }
.fixedpos { position: fixed; }
.start { top: 0; left: 0; }
.mid { top: 10px; left: 10px; }
.end { bottom: 0; right: 0; }
.zindex { z-index: 1; }
.small { width: 10px; height: 10px; background: blue; }
.medium { width: 20px; height: 20px; background: green; }
.large { width: 30px; height: 30px; background: pink; }
</style>

<div id=container>
  Text.
  <div id=child></div>
  <span>inline child</span>
  <div class="abspos start small"></div>
  <div class="relpos mid medium"></div>
  <div class="fixedpos end large"></div>
  <div class=relpos>
    <div class="abspos mid small zindex"></div>
  </div>
</div>