JSFiddle - React, Tailwind, and code Playground

by JuanMa

HTML

<div class="prueba"></div>

CSS

.prueba{
    background:url(http://i.imgur.com/7gmiGeF.jpg);
    position:relative;
    width:375px;
    height:200px;
}
.prueba:after{
    content:"";
    position:absolute;
    top:0;
    left:0;
    background:#9BEDFA;
    opacity:0;
    width:100%;
    height:100%;
    transition: .5s;
}
.prueba:hover:after{
    opacity:.3;
}