translation-animation-subpixel-offset.html

<!DOCTYPE html>
<title>Translation-only transform animation with subpixel offset</title>
<link rel="author" title="Xianzhu Wang" href="mailto:[email protected]">
<link rel="help" href="https://crbug.com/1155029">
<link rel="match" href="translation-animation-subpixel-offset-ref.html">
<style>
@keyframes move {
  0% {transform: translateY(10px);}
  100% {transform: translateY(10px);}
}
#red {
  position: absolute;
  top: 11px;
  left: 1px;
  width: 100px;
  height: 100px;
  background: red;
}
#container {
  position: absolute;
  top: 0.4px;
  left: 0.6px;
}
#target {
  position: relative;
  top: 0.4px;
  left: 0.6px;
  width: 100px;
  height: 100px;
  background: green;
  animation: move 1s infinite alternate;
}
</style>
<div id="red"></div>
<div id="container">
  <div id="target"></div>
</div>

chromium/third_party/blink/web_tests/external/wpt/css/css-animations/translation-animation-subpixel-offset.html