title: WordPress - Add class to Widget text
body: <p>What is the way to add a text input inside "text widget" and data in text input will add to class of widget like </p>
  
  <pre><code>&lt;aside id="text-2" class="widget widget_text custom_class_here"&gt;
  ...
  &lt;/aside&gt;
  </code></pre>
  
  <p>my way is un-register widget text and re-create that. But i think will have better way. How to do that thanks</p>