[gap-valid.html]
  [e.style['gap'\] = "normal normal" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "10px 10px" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "20% 20%" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "calc(20% + 10px) calc(20% + 10px)" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "normal 10px" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "10px 20%" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "20% calc(20% + 10px)" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "calc(20% + 10px) 0px" should set the property value]
    expected: FAIL

  [e.style['gap'\] = "0px normal" should set the property value]
    expected: FAIL