JSFiddle - React, Tailwind, and code Playground

HTML

<div id="dv1">Hover here!</div>
<div id="dv2">Some fading text here!</div>

CSS

div {
    height: 50px;
    padding 10px;
    text-align: center;
    color: white;
}
#dv1 {background-color: blue;}
#dv2 {
    background-color: green;
    display: none;
}

JavaScript

$('#dv1').hover(function(){
    $('#dv2').fadeToggle('slow');
});