title: Ant design Form.Item validation style
body: <p>Is it possible to add a className prop to the Form.Item validation?</p>
  <pre><code>&lt;Form.Item name=&quot;username&quot; rules={[
     { required: true, message: '...' },
     className=&quot;customValidation&quot; //&lt;- something like that, but it is not working
  ]}&gt;
  </code></pre>
  <p>Edit:
  Overriding the ant styles is not a valid solution!</p>