<!DOCTYPE html>
<html class="reftest-wait">
<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
<link rel="help" href="https://drafts.csswg.org/css-display-4/#display-animation">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/6429">
<link rel="match" href="/css/reference/ref-filled-green-100px-square.xht">
<style>
@keyframes display-animation {
  0% { display: none; }
  100% { display: block; }
}
#target {
  display: none;
  width: 100px;
  height: 100px;
  background-co