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<meta charset="utf-8">
<title>CSS Backgrounds and Borders Module Level 4: parsing background-position-y with invalid values</title>
<link rel="help" href="https://drafts.csswg.org/css-backgrounds-4/#propdef-background-position-y">
<meta name="assert" content="background-position-y supports only the grammar '[ center | [ top | bottom | y-start | y-end ]? <length-percentage>? ]#'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
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<script>
test_invalid_value("background-position-y", "left");
test_invalid_value("background-position-y", "right");
test_invalid_value("background-position-y", "x-start");
test_invalid_value("background-position-y", "x-end");
test_invalid_value("background-position-y", "center 10px");
test_invalid_value("background-position-y", "20% top");
test_invalid_value("background-position-y", "bottom top");
test_invalid_value("background-position-y", "y-start center");
test_invalid_value("background-position-y", "top, center bottom");
</script>
</body>
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