JSFiddle - React, Tailwind, and code Playground

HTML

<div><h1>Test</h1></div><a href="#" onlick="return false">toggle filter</a>

CSS

div {margin-top: 20px;}

div.opacity {opacity:0;filter:alpha(opacity=0)}

h1 {margin-top:20px;}

JavaScript

$(document).ready( function() {
    $('a').click( function() {
        $('div').addClass('opacity');
    });
});