JSFiddle - React, Tailwind, and code Playground

HTML

<div class="line">LINE!<img src="http://i.piccy.info/i7/c7a432fe0beb98a3a66f5b423b430423/1-5-1789/1066503/lol.png" class="me"></div>

CSS

.line {
    width: 200px;
    height: 50px;
    border: 1px solid #ccc;
    margin: 10px;
    padding: 10px;
    position: relative;
}
.me {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    z-index: -1;
}