<thead>
  <tbody>
  
    <tr>
      <td class="center aligned one wide">
        <i class="ui empty circular label black" data-content="required" data-position="top center"></i>
      </td>
      <td><code>username</code></td>
      <td class="center aligned">
        <code>string</code>
        <code class="ui label">test</code>
      </td>
      <td class="eight wide"><p>用户名</p>
</td>
    </tr>
  
    <tr>
      <td class="center aligned one wide">
        <i class="ui empty circular label black" da