[variable-css-wide-keywords.html]
  [`revert-layer` as a `var()` fallback for an unregistered custom property]
    expected: FAIL

  [`revert-layer` as a `var()` fallback for a non-inheriting registered custom property]
    expected: FAIL

  [`revert-layer` as a `var()` fallback for an inheriting registered custom property]
    expected: FAIL