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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Animations: parsing animation-direction with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-animations/#propdef-animation-direction">
+<meta name="assert" content="animation-direction supports only the grammar '<single-animation-direction> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("animation-direction", "auto");
+test_invalid_value("animation-direction", "normal reverse");
+
+test_invalid_value("animation-direction", "reverse, initial");
+test_invalid_value("animation-direction", "initial, reverse");
+</script>
+</body>
+</html>