JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://daneden.github.io/animate.css/animate.min.css">
<div class="initials-container">
<div class="initials initials-background animated 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.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;
}

.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;
}