JSFiddle - React, Tailwind, and code Playground

by psycketom

HTML

<h1>Hello, World!</h1>

CSS

html, body
{
    font-size: 16px;
}

h1
{
    font-size: 4.333em;
}

JavaScript

$(function() {
    var size = $('h1').css('font-size');

    $('body').append($('<span></span>').text(size + ' ' + parseFloat(size)));
});