[calc-sibling-function.html]
  [basic sibling-index() test]
    expected: FAIL

  [basic sibling-count() test]
    expected: FAIL

  [sibling-index() in calc() with percentage]
    expected: FAIL

  [sibling-count on pseudo-element]
    expected: FAIL

  [sibling-count() on pseudo-element]
    expected: FAIL

  [sibling-index() on root]
    expected: FAIL

  [sibling-count() on root]
    expected: FAIL