[equals.tentative.html]
  [Two CSSUnitValues with same value and unit are equal]
    expected: FAIL

  [Two CSSUnitValues with different values are not equal]
    expected: FAIL

  [Two CSSUnitValues with different units are not equal]
    expected: FAIL

  [Two CSSMathValues with different types are not equal]
    expected: FAIL

  [Two CSSMathValues with different number of values are not equal]
    expected: FAIL

  [Two CSSMathValues with different values are not equal]
    expected: FAIL

  [Two CSSMathValues with same structure are equal]
    expected: FAIL

  [Multiple CSSMathValues with same structure are equal]
    expected: FAIL

  [Multiple CSSMathValues with one different are not equal]
    expected: FAIL

