title: Where can I change the form text box size?
body: <p>I make form in <code>Controller</code> like this below.</p>
  
  <pre><code>$form = $this-&gt;createFormBuilder($row)
  -&gt;add('comment',null,array('label' =&gt; 'input comment'))
  </code></pre>
  
  <p>then in the twig file...</p>
  
  <pre><code>{{form_widget(form.commentToMutor)}}
  </code></pre>
  
  <p>It shows text input box,but it is too small.</p>
  
  <p>How to change size of <code>TextBox</code></p>