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Test Info:

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<script>
test_invalid_value("animation-range-start", "peek 50%");
test_invalid_value("animation-range-start", "50% contain");
test_invalid_value("animation-range-start", "50% cover");
test_invalid_value("animation-range-start", "50% entry");
test_invalid_value("animation-range-start", "50% enter");
test_invalid_value("animation-range-start", "50% exit");
test_invalid_value("animation-range-start", "contain contain");
test_invalid_value("animation-range-start", "none");
test_invalid_value("animation-range-start", "cover 50% enter 50%");
</script>