JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>
<div></div>
<div></div>

CSS

div {
    height: 80px;
    width: 150px;
    border: 1px solid silver;
    border-radius: 4px;
    margin: 30px 40px;
    background: green;
    cursor: pointer;
}

div:hover + div,
div.hover{
    background: orange;
}

JavaScript

$('div:last').hover(function(){
    $('div:first').toggleClass('hover');
});