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diff --git a/layout/reftests/css-animations/in-visibility-hidden-animation-pseudo-element.html b/layout/reftests/css-animations/in-visibility-hidden-animation-pseudo-element.html
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index 0000000000..cbdc4e11b3
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+++ b/layout/reftests/css-animations/in-visibility-hidden-animation-pseudo-element.html
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+<!DOCTYPE HTML>
+<html class="reftest-wait">
+<title>In visibility hidden color animation on pseudo element</title>
+<style>
+
+@keyframes color {
+  0% { color: black }
+  1% { color: blue }
+  100% { color: blue }
+}
+
+div:before {
+  visibility: visible;
+  content: "Color Animation";
+  animation: color 0.1s 1 forwards;
+}
+
+div {
+  color: black;
+  visibility: hidden;
+}
+
+</style>
+<div id="target">color animation on visible pseudo element attached to invisible element</div>
+<script>
+
+document.getElementById("target").addEventListener("animationend", AnimationEndListener);
+
+function AnimationEndListener(event) {
+  setTimeout(RemoveReftestWait, 0);
+}
+
+function RemoveReftestWait() {
+  document.documentElement.classList.remove("reftest-wait");
+}
+
+</script>