Blitz - WPT: anchor-center-scroll-003.html

wpt / css / css-anchor-position / anchor-center-scroll-003.html

/css/css-anchor-position/anchor-center-scroll-003.html

<!DOCTYPE html>
<html class=reftest-wait>
<title>CSS Anchor Positioning Test: anchor-center after scroll, with position-area</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#anchor-center">
<link rel="author" href="mailto:dshin@mozilla.com">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
.abs-cb {
  width: 200px;
  height: 200px;
  position: relative;
}

.scroller {
  overflow: scroll;
  scrollbar-width: none;
  width: 100%;
  height: 100%;
}

.content {
  display: grid;
  align-items: center;
  justify-items: center;
  width: 400px;
  height: 400px;
}

.anchor {
  anchor-name: --a;
  background: red;
  width: 100px;
  height: 100px;
}

.positioned {
  position: absolute;
  background: green;
  position-anchor: --a;
  width: 100px;
  height: 100px;
  position-area: span-all;
  justify-self: anchor-center;
}

.dn {
  display: none;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class=abs-cb>
  <div id=s class=scroller>
    <div class=content>
      <div class=anchor></div>
    </div>
  </div>
  <div id=d class="positioned dn"></div>
</div>
<script>
function raf() {
  return new Promise(resolve => requestAnimationFrame(resolve));
}

async function run() {
  await raf();
  await raf();
  s.scrollLeft = 150;
  s.scrollTop = 150;
  d.classList.toggle('dn');

  document.documentElement.classList.remove('reftest-wait');
}

run();
</script>
</html>

/css/reference/ref-filled-green-100px-square.xht

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>CSS Reftest Reference</title>
  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <style type="text/css"><![CDATA[
  div
  {
  background-color: green;
  height: 100px;
  width: 100px;
  }
  ]]></style>
 </head>
 <body>
  <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
  <div></div>
 </body>
</html>