[overlay-valid.html]
  [e.style['overlay'\] = "none" should set the property value]
    expected: FAIL

  [e.style['overlay'\] = "auto" should set the property value]
    expected: FAIL

  [e.style['overlay'\] = "inherit" should set the property value]
    expected: FAIL

  [e.style['overlay'\] = "initial" should set the property value]
    expected: FAIL

  [e.style['overlay'\] = "revert" should set the property value]
    expected: FAIL

  [e.style['overlay'\] = "unset" should set the property value]
    expected: FAIL