container-units-animation.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /css/css-contain/container-queries/container-units-animation.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Container Relative Units: Animation</title>

<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="support/cq-testcommon.js"></script>

<style>

  #container {

    container-type: size;

    width: 200px;

    height: 200px;

  @keyframes anim_cqw { from { top: 20cqw; } to { top: 40cqw; } }

  @keyframes anim_cqh { from { top: 20cqh; } to { top: 40cqh; } }

  @keyframes anim_cqi { from { top: 20cqi; } to { top: 40cqi; } }

  @keyframes anim_cqb { from { top: 20cqb; } to { top: 40cqb; } }

  @keyframes anim_cqmin { from { top: 20cqmin; } to { top: 40cqmin; } }

  @keyframes anim_cqmax { from { top: 20cqmax; } to { top: 40cqmax; } }

  #container > div {

    animation-delay: -5s;

    animation-play-state: paused;

    animation-duration: 10s;

    animation-timing-function: linear;

  #element_cqw { animation-name: anim_cqw; }

  #element_cqh { animation-name: anim_cqh; }

  #element_cqi { animation-name: anim_cqi; }

  #element_cqb { animation-name: anim_cqb; }

  #element_cqmin { animation-name: anim_cqmin; }

  #element_cqmax { animation-name: anim_cqmax; }

</style>

<div id=container>

  <div id=element_cqw></div>

  <div id=element_cqh></div>

  <div id=element_cqi></div>

  <div id=element_cqb></div>

  <div id=element_cqmin></div>

  <div id=element_cqmax></div>

</div>

<script>

  setup(() => assert_implements_container_queries());

  const units = ['cqw', 'cqh', 'cqi', 'cqb', 'cqmin', 'cqmax'];

  for (let unit of units) {

    test(() => {

      let element = document.getElementById(`element_${unit}`)

      assert_equals(getComputedStyle(element).top, '60px');

    }, `Animation using ${unit} unit`);

    test(() => {

      let element = document.getElementById(`element_${unit}`)

      assert_equals(getComputedStyle(element).top, '60px');

      try {

        container.style.width = '300px';

        container.style.height = '300px';

        assert_equals(getComputedStyle(element).top, '90px');

      } finally {

        container.style = '';

      assert_equals(getComputedStyle(element).top, '60px');

    }, `Animation using ${unit} unit responds to changing container size`);

</script>