JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#">Click Me</a>
<div></div>

CSS

div {
    opacity : 0;
    width   : 100px;
    height  : 100px;
    background : gold;
}

JavaScript

$('a').on('click', function () {
    $(this).next().css({
        opacity          : 1,
        WebkitTransition : 'opacity 1s ease-in-out',
        MozTransition    : 'opacity 1s ease-in-out',
        MsTransition     : 'opacity 1s ease-in-out',
        OTransition      : 'opacity 1s ease-in-out',
        transition       : 'opacity 1s ease-in-out'
    });
});