Blitz - WPT: anchor-position-area-block-center-scroll.html

wpt / css / css-anchor-position / anchor-position-area-block-center-scroll.html

/css/css-anchor-position/anchor-position-area-block-center-scroll.html

<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>CSS Anchor Positioning: block-direction position-area grid overflow is unaffected by scroll</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#fallback-apply">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=2050613">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
  #cb {
    position: relative;
    width: 200px;
    height: 100px;
  }
  #scroller {
    width: 200px;
    height: 100px;
    overflow: scroll;
    scrollbar-width: none;
  }
  #content {
    width: 400px;
    height: 200px;
  }
  #anchor {
    width: 100px;
    height: 60px;
    margin-left: 100px;
    margin-top: 100px;
    background: red;
    anchor-name: --a;
  }
  #target {
    position: absolute;
    width: 100px;
    /* Always overflows the vertical center grid. */
    height: 100px;
    position-anchor: --a;
    position-area: right center;
    position-try-fallbacks: --span;
    background: green;
  }
  @position-try --span {
    /* CB no longer constrained by anchor height. */
    position-area: span-all;
  }
  .dn {
    display: none;
  }
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div id="cb">
  <div id="scroller">
    <div id="content">
      <div id="anchor"></div>
    </div>
  </div>
  <div id="target" class="dn"></div>
</div>
<script>
  scroller.scrollLeft = 100;
  scroller.scrollTop = 80;
  // Reveal the target after scrolling so its first fit check runs with a
  // non-zero scroll shift.
  target.classList.remove('dn');
  document.documentElement.classList.remove('reftest-wait');
</script>

/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>