title: how to put overlay icon inside a textbox/textarea
body: <p>I have a textarea and I want to allow the user to click on it, and on click I would like to show them a form.</p>
  
  <p>On click and show form can be easily done with jquery as per my knowledge of UI development. 
  But how to put a icon inside the textbox/textarea? Something like this </p>
  
  <p><img src="https://i.stack.imgur.com/08QRH.jpg" alt="enter image description here"></p>
  
  <p>I tried to search for demos of this but could not find any.</p>