JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://darcyclarke.me/dev/imagesloaded/imagesloaded.js"></script>
<div class="bg-img"></div>

CSS

div.bg-img {
    background-image: url(http://www.gstatic.com/webp/gallery/4.jpg);
    width: 100%;
    height: 400px;
}

JavaScript

$(window).load(function() {
    alert(1);
  });