sousa-gecko/testing/web-platform/tests/css/css-transforms/animation/scale-explicit-and-implicit-keyframes.html

<!DOCTYPE html>
<html class="reftest-wait">
<head>
<title>Animating the "scale" property with explicit and implicit keyframes</title>
<link rel="help" href="https://drafts.csswg.org/css-transforms/">
<link rel="match" href="scale-explicit-and-implicit-keyframes-ref.html">
<script src="../../../common/reftest-wait.js"></script>
<style>

div {
    width: 100px;
    height: 100px;
    margin: 10px;
    background-color: black;
    animation: none 100000s -25000s linear forwards;
}

@keyframes explicit-from-and-to {
    from { scale: 0.1 }
    to   { scale: 0.9 }
}

@keyframes implicit-from {
    to { scale: 0.2 }
}

@keyframes implicit-to {
    from { scale: 0.2 }
}

#explicit-from-and-to {
    animation-name: explicit-from-and-to;
}

#unspecifed-from {
    animation-name: implicit-from;
}

#base-value-from {
    scale: 0.6;
    animation-name: implicit-from;
}

#unspecifed-to {
    animation-name: implicit-to;
}

#base-value-to {
    scale: 0.6;
    animation-name: implicit-to;
}

</style>
</head>
<body>

<div id="explicit-from-and-to"></div>
<div id="unspecifed-from"></div>
<div id="base-value-from"></div>
<div id="unspecifed-to"></div>
<div id="base-value-to"></div>

<script>
(async function() {
    await Promise.all(document.getAnimations().map(animation => animation.ready));
    await new Promise(requestAnimationFrame);
    await new Promise(requestAnimationFrame);
    takeScreenshot();
})();
</script>
</body>
</html>