JSFiddle - React, Tailwind, and code Playground

HTML

<a id = 'registrationLink' href='#'>Register now!</a>

CSS

#registrationLink
{
    font-weight: bold;
}

JavaScript

function blink()
{
    var time = 1300;
    $("#registrationLink")
        .fadeTo(time, 0.2)
        .fadeTo(time, 1,  function() { blink(); })
};        

$(document).ready(function(){ blink(); });