title: How to bring dropdown at top
body: <p><a href="https://i.stack.imgur.com/yykV3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yykV3.png" alt="enter image description here" /></a></p>
  <p>I'm not  getting this dropdown in front as i have created a custom control combo of tree behaviour.</p>