[option.html]
  [      <form action="/resource-timing/resources/document-navigated.html" method="post">        <input type="submit">        <select name="dangling"><option>    ]
    expected: FAIL

  [      <div>        <form action="/resource-timing/resources/document-navigated.html" method="post">          <input type="submit">          <select name="dangling"><option>    ]
    expected: FAIL

  [      <form action="/resource-timing/resources/document-navigated.html" method="post" id="form">        <input type="submit">      </form>      <select name="dangling" form="form"><option>    ]
    expected: FAIL

  [      <form action="/resource-timing/resources/document-navigated.html" method="post">        <input type="submit">        <select name="dangling"><option label="yay">    ]
    expected: FAIL

  [      <div>        <form action="/resource-timing/resources/document-navigated.html" method="post">          <input type="submit">          <select name="dangling"><option label="yay">    ]
    expected: FAIL

  [      <form action="/resource-timing/resources/document-navigated.html" method="post" id="form">        <input type="submit">      </form>      <select name="dangling" form="form"><option label="yay">    ]
    expected: FAIL