css/css-contain/content-visibility/content-visibility-096.html

<!doctype HTML>
<html class="reftest-wait">
<meta charset="utf8">
<title>Content Visibility: auto, scroll away and back</title>
<link rel="author" title="Rob Buis" href="mailto:rbuis@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<link rel="match" href="content-visibility-096-ref.html">
<meta name="assert" content="scolling away from c-v: auto container and back renders as expected">
<script src="/common/reftest-wait.js"></script>

<style>
.spacer {
  height: 10000px;
}
#child {
  width: 100px;
  height: 100px;
  background: green;
  position: relative
}
#target {
  width: 10px;
  height: 10px;
}
.auto { content-visibility: auto; }

</style>

<div class="auto">
  <div id=child></div>
</div>
<div class=spacer></div>
<div id=target></div>

<script>

function runTest() {
  document.getElementById("target").scrollIntoView(true /* alignToTop */);
  requestAnimationFrame(finishTest);
}

function finishTest() {
  scrollTo(0, 0);
  requestAnimationFrame(takeScreenshot);
}

window.onload = requestAnimationFrame(() => {
  requestAnimationFrame(() => {
    requestAnimationFrame(() => {
      runTest();
    });
  });
});

</script>
</html>