JSFiddle - React, Tailwind, and code Playground

HTML

<div class="fader">
    <img src="http://placehold.it/300x300/000fff" />
    <img src="http://placehold.it/300x300/fff000" />
</div>

CSS

.fader { display: inline-block; }
.fader img:last-child {
    position: absolute;
    top: 0; 
    left: 0;
    display: none;
}

JavaScript

$('.fader').hover(function() {
    $(this).find("img").fadeToggle();
});