[idlharness.html]
  [CSSPositionFallbackRule interface: existence and properties of interface object]
    expected: FAIL

  [CSSPositionFallbackRule interface object length]
    expected: FAIL

  [CSSPositionFallbackRule interface object name]
    expected: FAIL

  [CSSPositionFallbackRule interface: existence and properties of interface prototype object]
    expected: FAIL

  [CSSPositionFallbackRule interface: existence and properties of interface prototype object's "constructor" property]
    expected: FAIL

  [CSSPositionFallbackRule interface: existence and properties of interface prototype object's @@unscopables property]
    expected: FAIL

  [CSSPositionFallbackRule interface: attribute name]
    expected: FAIL

  [Stringification of positionFallback]
    expected: FAIL

  [CSSPositionFallbackRule interface: positionFallback must inherit property "name" with the proper type]
    expected: FAIL

  [CSSTryRule interface: existence and properties of interface object]
    expected: FAIL

  [CSSTryRule interface object length]
    expected: FAIL

  [CSSTryRule interface object name]
    expected: FAIL

  [CSSTryRule interface: existence and properties of interface prototype object]
    expected: FAIL

  [CSSTryRule interface: existence and properties of interface prototype object's "constructor" property]
    expected: FAIL

  [CSSTryRule interface: existence and properties of interface prototype object's @@unscopables property]
    expected: FAIL

  [CSSTryRule interface: attribute style]
    expected: FAIL

  [CSSTryRule must be primary interface of try1]
    expected: FAIL

  [Stringification of try1]
    expected: FAIL

  [CSSTryRule interface: try1 must inherit property "style" with the proper type]
    expected: FAIL

  [CSSTryRule must be primary interface of try2]
    expected: FAIL

  [Stringification of try2]
    expected: FAIL

  [CSSTryRule interface: try2 must inherit property "style" with the proper type]
    expected: FAIL