JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div1"></div>

CSS

.div1 {
    height:200px;
    width:600px;
    position:relative;
    background:red;
}
.div1:after {
    position:absolute;
    width:100%;
    height:100%;
    content:'';
    background:url("http://lorempixel.com/output/business-q-c-640-480-10.jpg");
    background-size:cover;
    opacity:1;
    transition: 3s;
}
.div1:hover:after {
    opacity:0;
}