JSFiddle - React, Tailwind, and code Playground

HTML

<div id="my_div"></div>

CSS

#my_div {
    height:60px;
    width:60px;
    background-color:red;
}

JavaScript

(function pulse(){
        $('#my_div').delay(200).css("background-color","blue").delay(50).css("background-color","red").delay(50).fadeIn('slow',pulse);
    })();