JSFiddle - React, Tailwind, and code Playground

HTML

<div id="one"></div>
<div id="two"></div>

CSS

#one {
    width:200px;
    height:200px;
    background-color:yellow;
}
#two {
    width:200px;
    height:200px;
    background-color:green;
}

JavaScript

$(function() {
    $("#two").hover(function() {
        $("#two").css("background-color","blue");
    }, function() {
        $("#two").css("background-color","");
    });
});