<!DOCTYPE html>
<meta charset="utf-8">
<title>PNG Third Edition: animated PNG, plays</title>
<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
<style>
    .test {
        width: 128px;
        height: 64px;
        background-color: white;
        background-image:
        linear-gradient(45deg, #ccc 25%, transparent 25%),
        linear-gradient(-45deg, #ccc 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #ccc 75%),
        linear-gradient(-45deg, transparent 75%, #