This is a testharness.js-based test. [FAIL] e.style['display'] = "inline grid-lanes" should set the property value assert_equals: serialization should be canonical expected "inline grid-lanes" but got "inline-grid-lanes" [FAIL] e.style['display'] = "grid-lanes inline" should set the property value assert_equals: serialization should be canonical expected "inline grid-lanes" but got "inline-grid-lanes" Harness: the test ran to completion.