JSFiddle - React, Tailwind, and code Playground
HTML
<p class="fileDetails">
<span class="filename">text goes here</div>
<span class="fileSize">text goes here</div>
</p>
<button id="wrapMe">Wrap it!</button>
CSS
.wrapper { border: red 2px solid };
JavaScript
$("#wrapMe").on("click", function() {
$(".fileDetails").wrap( $("<div>", { "class": "wrapper"}));
});