[width-valid.html]
  [e.style['width'\] = "fit-content(10% - 0.5em)" should set the property value]
    expected: FAIL

  [e.style['width'\] = "fit-content(0.5em)" should set the property value]
    expected: FAIL

  [e.style['width'\] = "fit-content(10%)" should set the property value]
    expected: FAIL