chromium/src/third_party/blink/renderer/core/paint/test_data/opacity-animation.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <style>
 div {
   width: 100px;
   height: 100px;
   background-color: red;
 }
 .animate {
   animation-name: test;
   animation-duration: 4s;
 }
 @keyframes test {
   from { opacity: 0.0;}
   to { opacity: 1.0;}
 }
 </style>
 <div id="target" class="animate"></div>;
	<!DOCTYPE html>
	<style>
	div {
	width: 100px;
	height: 100px;
	background-color: red;
	}
	.animate {
	animation-name: test;
	animation-duration: 4s;
	}
	@keyframes test {
	from { opacity: 0.0;}
	to { opacity: 1.0;}
	}
	</style>
	<div id="target" class="animate"></div>;