[attr-pseudo-elem-invalidation.html]
  [CSS Values and Units Test: attr() invalidation of pseudo elements]
    expected: FAIL

  [CSS Values and Units Test: attr() invalidation of pseudo elements 1]
    expected: FAIL

  [CSS Values and Units Test: attr() invalidation of pseudo elements 2]
    expected: FAIL

  [CSS Values and Units Test: attr() invalidation of pseudo elements 3]
    expected: FAIL

  [CSS Values and Units Test: attr() invalidation of pseudo elements 4]
    expected: FAIL

  [CSS Values and Units Test: attr() invalidation of pseudo elements 5]
    expected: FAIL