JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<div>
    <div>
        1. 
        <span>Fe</span>
        <span>Fi</span>
        <span>Fo</span>
        <span>Fum</span>
    </div>
    <div>
        2. 
        <span>He</span>
        <span>Hi</span>
        <span>Ho</span>
        <span>Hum</span>
    </div>
    <div>
        3. 
        <span>Be</span>
        <span>Bi</span>
        <span>Bo</span>
        <span>Bum</span>
    </div>
</div>

JavaScript

$('div > div').each(function() {
    $(this).prependTo(this.parentNode);
});