[offsetParent-across-shadow-boundaries.html]
  [offsetParent must find the first offset parent which is a shadow-including ancestor of the context object even some shadow tree of open mode did not have any offset parent]
    expected: FAIL

  [offsetParent must find the first offset parent which is a shadow-including ancestor of the context object even some shadow tree of closed mode did not have any offset parent]
    expected: FAIL

  [offsetParent must return the fixed position containing block of a fixed element when the context object is assigned to a slot within a fixed containing block in shadow tree of open mode]
    expected: FAIL

  [offsetParent must return the fixed position containing block of a fixed element when the context object is assigned to a slot within a fixed containing block in shadow tree of closed mode]
    expected: FAIL

  [offsetParent must return null when the context object is assigned to a slot without a fixed containing block in shadow tree of open mode]
    expected: FAIL

  [offsetParent must return null when the context object is assigned to a slot without a fixed containing block in shadow tree of closed mode]
    expected: FAIL