JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
    <body>
        <div id="topmenu">
            <ul>
                <li><a href=""><span>over</span> ons</a></li>
                <li><a href="">contact</a></li>
                <li><a href="">helpdesk</a></li>
            </ul>
        </div>
    </body>
</html>

CSS

#topmenu {
    float: right;
}

#topmenu li {
    display: inline;    
    margin-left: 20px;
}