[var-reference-registered-properties.html]
  [var() references work with registered properties]
    expected: FAIL

  [Registered lists may be concatenated]
    expected: FAIL

  [References to mixed registered and unregistered var()-properties work in registered lists]
    expected: FAIL

  [References to registered var()-properties work in registered lists]
    expected: FAIL

  [Calc expressions are resolved when substituting]
    expected: FAIL

  [Font-relative units are absolutized when substituting]
    expected: FAIL

  [Lists with relative units are absolutized when substituting]
    expected: FAIL

  [Valid fallback does not invalidate var()-reference [<length> | <color>, red\]]
    expected: FAIL

  [Valid fallback does not invalidate var()-reference [<length>, 10px\]]
    expected: FAIL

  [Invalid fallback invalidates var()-reference [<length>, red\]]
    expected: FAIL

  [Valid fallback does not invalidate var()-reference [<length> | none, none\]]
    expected: FAIL

  [Invalid fallback invalidates var()-reference [<length>, var(--novar)\]]
    expected: FAIL

  [Invalid fallback invalidates var()-reference [<length> | none, nolength\]]
    expected: FAIL

  [Values are absolutized when substituting into properties with universal syntax]
    expected: FAIL