This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 1 duplicate test name: "Check that unitless lengths are not valid for logical properties in quirks mode"
PASS Check that unitless lengths are not valid for logical properties in quirks mode 
PASS Check that unitless lengths are not valid for logical properties in quirks mode 
PASS Check that unitless lengths are not valid for logical properties in quirks mode 
PASS Check that unitless lengths are not valid for logical properties in quirks mode 
PASS Check that unitless lengths are not valid for logical properties in quirks mode 
PASS Check that unitless lengths are not valid for logical properties in quirks mode 
Harness: the test ran to completion.