How to display background image using PHP/CSS : <p>I'm looking for the clean simple solution for linking background images using PHP and CSS Any help is much appreciated! </p>

<p>I've read around for over an hour and can't seem to find the answer. 
<a href="https://i.stack.imgur.com/Ia0qv.png" rel="nofollow noreferrer">Here is what I have</a></p>

<p>I'm expecting the image to be displayed but it is not.</p>
