JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.fadeIn {
	display: block;
	animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
	0% { opacity: 0; }
	100% { opacity: 100;  }
}

JavaScript

var el = document.querySelector('.link.auto_open');

el.setAttribute('href', 'http://newlink.com/');
el.innerHTML = 'Need inspiration?';
el.classList.add('fadeIn');