title: Shortcode not working on Wordpress website
body: <p>I have been working on wordpress website. Few days back i changed theme. My previous them was supporting wordpress shortcode. I was using [box type=”shadow”] to creates a shadow box.
  E.g</p>
  <p>[box type=”shadow”] Lorem Ipsum is simply dummy text of the printing and typesetting industry.[/box]  and outuput had been displaying like shown in image below</p>
  <p><a href="https://i.stack.imgur.com/SPSSo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SPSSo.png" alt="enter image description here" /></a></p>
  <p>I don't want to use any plugin for this. I wanna do this with pure code.</p>