JSFiddle - React, Tailwind, and code Playground

HTML

<div class=opa>dsdsds</div>
<br> <br>
<p><a href="#">clickme</a></p>

CSS

div {
    position: absolute;
    transition: all 2s;
}
div.opa {
    opacity: 0;
    visibility:hidden;
}

JavaScript

$('a').click(function(){
    $('div').toggleClass('opa');    
})