x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----

  x Child

  x Element

  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   : ^^^
   `----

  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   : ^^^
   `----

  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   :    ^^^^^^^^^^^^^^^^^^^^^
   `----

  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   :    ^^^^^^^^^^^^^^^^^^^^^
   `----

  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   :            ^^^^
   `----

  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests1_dat.97.html:1:1]
 1 | <b><button></b></button></b>
   :            ^^^^
   `----