[background-size-composition.html]
  [Compositing Web Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (0.75) should be [auto 175px, contain\]]
    expected: FAIL

  [Compositing CSS Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (1.25) should be [auto 225px, contain\]]
    expected: FAIL

  [Compositing CSS Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (-0.25) should be [auto 75px, contain\]]
    expected: FAIL

  [Compositing Web Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (0.25) should be [auto 125px, contain\]]
    expected: FAIL

  [Compositing Web Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (1.25) should be [auto 225px, contain\]]
    expected: FAIL

  [Compositing Web Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (-0.25) should be [auto 75px, contain\]]
    expected: FAIL

  [Compositing CSS Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (0.5) should be [auto 150px, contain\]]
    expected: FAIL

  [Compositing Web Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (0.5) should be [auto 150px, contain\]]
    expected: FAIL

  [Compositing CSS Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (0.25) should be [auto 125px, contain\]]
    expected: FAIL

  [Compositing CSS Animations: property <background-size> underlying [auto 100px, contain\] from add [[object Object\]\] to replace [auto 200px, contain\] at (0.75) should be [auto 175px, contain\]]
    expected: FAIL