Blitz - WPT: anchored-fallback-color-change.html

wpt / css / css-anchor-position / container-queries / anchored-fallback-color-change.html

/css/css-anchor-position/container-queries/anchored-fallback-color-change.html

<!DOCTYPE html>
<html class="reftest-wait">
<title>CSS Conditional Test: @container anchored(fallback) changes background-color</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-2/#anchored-container-queries">
<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
<script src="/common/reftest-wait.js"></script>
<style>
  #wrapper {
    position: relative;
    height: 200px;
  }
  #anchor {
    position: relative;
    anchor-name: --a;
    width: 100px;
    height: 100px;
  }
  #anchored {
    position: absolute;
    position-anchor: --a;
    position-area: top;
    position-try-fallbacks: flip-block;
    width: 100px;
    height: 100px;
    container-type: anchored;
    background-color: red;
  }
  #target {
    position: absolute;
    width: 100px;
    height: 100px;
    left: 100px;
  }
  @container anchored(fallback: none) {
    #target {
      background-color: green;
      left: auto;
    }
  }
  @container anchored(fallback: flip-block) {
    #target {
      background-color: red;
    }
  }
</style>
<p>Test passes if there is a filled green square.</p>
<div id="wrapper">
  <div id="anchor"></div>
  <div id="anchored">
    <div id="target"></div>
  </div>
</div>
<script>
  requestAnimationFrame(() => {
    requestAnimationFrame(() => {
      anchor.style.top = "100px";
      takeScreenshot();
    });
  });
</script>

/css/reference/ref-filled-green-100px-square-only.html

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
<p>Test passes if there is a filled green square.</p>
<div style="width:100px; height:100px; background:green;"></div>