JSFiddle - React, Tailwind, and code Playground

HTML

<div id="contenido">You are mean</div>

CSS

#contenido {
    right:0;
    position:absolute; 
    width:400px; 
    height:200px; 
    background:red;
    -webkit-transition:all 0.2s ease; 
}

JavaScript

document.getElementById("contenido").onclick = function(){
	this.style.right = (getComputedStyle(this).getPropertyValue("right").match(/^0/) ? -150 : 0) + "px";
}