JSFiddle - React, Tailwind, and code Playground

HTML

<div class="reflection">Hello</div>
<div class="reflection">Goodbye</div>

CSS

.reflection {
    color:blue;
}
.reflected {
    color:red;
}

JavaScript

$(document).ready(function(){
    $('div.reflection').after(function() {
        return $(this).clone().toggleClass('reflection reflected');
    });
});