JSFiddle - React, Tailwind, and code Playground

HTML

<div class="img">
    <a href=""><img src="http://novaradio.ru/media/2010/06/mortal_kombat_logo-200x200.png" alt=""></a>
</div>

CSS

.img {
    position: relative;
}
.img:hover:before {
    content: "";
    position: absolute;
    width: 100px;
    height: 100px;
    background:url(http://pikchyriki.net/avatar/krutye/100/46.jpg) ;
}