chromium/tools/perf/page_sets/tough_animation_cases/resources/animation.css

/* Copyright 2014 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

target {
  -webkit-animation: anim 1s linear;
}
target.reverse {
  -webkit-animation: reverse-anim 1s linear;
}
@-webkit-keyframes anim {
  0% { opacity: 0; }
  100% { opacity: 1; }
}
@-webkit-keyframes reverse-anim {
  0% { opacity: 1; }
  100% { opacity: 0; }
}