JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="link">BLARG</a>

CSS

a {
    font-size: 16px;
    text-decoration: none;
    color: black
}

a.active {
    font-size: 30px;
}

JavaScript

$(document).ready(function() {
    $('.link').click(function() {
        $(this).addClass('active');
        setTimeout(function(){
            $('.active').removeClass('active');
        },2000);          
    });        
});