JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://daneden.github.io/animate.css/animate.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/3.2.0/imagesloaded.pkgd.min.js"></script>
<div class="initials-container">
<div id="initials-background" class="initials fadeIn">

</div>
<div class="initials initials-text">
A
</div>
</div>

CSS

.initials {
  width: 100%;
  height: 100%;
  
}

.initials.initials-text {
  padding:20px 0px;
  position: relative;
  z-index: 2;
}

#initials-background {
  position: absolute;
  background-image: url("http://static.tumblr.com/lxn1yld/Hnxnxaqya/space.gif");
  -webkit-animation-delay: 3s;
  -moz-animation-delay: 3s;
  -o-animation-delay: 3s;
  animation-delay: 3s;
  z-index: 1;
  opacity: 0;
}

#initials-background.animated {
  opacity: 1;
}



.initials-container {
    margin-top:20px;
    margin-left:20px;
    height: 100%;
    position:relative;
    background:black;
    color:white;
    width:60px;
    text-align:center;
    font-size:17px;
    letter-spacing:5px;
    box-shadow:0px 2px 3px rgba(0,0,0,.15);
    overflow: hidden;
    white-space: nowrap;
}

JavaScript

imagesLoaded( '#initials-background', { background: true }, function() {
	console.log("image loaded");
  var d=document.getElementById("initials-background");
  d.className=d.className +" animated";
});