JSFiddle - React, Tailwind, and code Playground

HTML

<div class="hidden">
<p>This is some text.</p>
</div>

CSS

div.hidden
{
   display: none
}

JavaScript

$(document).ready(function() {
    $('div').fadeOut(1);
    $('div').removeClass('hidden');
    $('div').fadeIn(1000);
});