title: how to display a div triggered by onclick event
body: <p>I have have two <code>div</code>s. I want to display a <code>div</code>( which has other <code>div</code>s inside it ) when the <code>onclick</code> event is triggered.</p>
  
  <p>Any help or suggestion would be appreciated.</p>
  
  <p><img src="https://i.stack.imgur.com/owNYR.png" alt="Mockup of a div containing a submit button and another div"></p>