JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.initials {
    position:absolute;
    background:black;
    background-image: url("http://static.tumblr.com/lxn1yld/Hnxnxaqya/space.gif");
    color:white;
    margin-top:20px;
    padding-top:20px;
    padding-bottom:20px;
    width:60px;
    text-align:center;
    margin-left:20px;
    font-size:17px;
    letter-spacing:5px;
    box-shadow:0px 2px 3px rgba(0,0,0,.15);
    overflow: hidden;
    white-space: nowrap;
}