[text-box-trim-valid.html]
  [e.style['text-box-trim'\] = "start" should set the property value]
    expected: FAIL

  [e.style['text-box-trim'\] = "end" should set the property value]
    expected: FAIL

  [e.style['text-box-trim'\] = "both" should set the property value]
    expected: FAIL

  [e.style['text-box-trim'\] = "none" should set the property value]
    expected: FAIL