[animation-delay-start-valid.tentative.html]
  [e.style['animation-delay-start'\] = "-5ms" should set the property value]
    expected: FAIL

  [e.style['animation-delay-start'\] = "0s" should set the property value]
    expected: FAIL

  [e.style['animation-delay-start'\] = "10s" should set the property value]
    expected: FAIL

  [e.style['animation-delay-start'\] = "20s, 10s" should set the property value]
    expected: FAIL