title: cakephp 3 : How to add class in form button?
body: <p>I have tried this line to add class in cakephp form button, but class is not showing in html </p>
  
  <pre><code>&lt;?= $this-&gt;Form-&gt;button(__('Login',['class'=&gt;'login-btn'])); ?&gt;
  </code></pre>
  
  <p>How can I add class in button ? </p>