JSFiddle - React, Tailwind, and code Playground
by NickWilde
HTML
<ul align="center">
<li onmouseover="border(this)"><a href="">Home</a></li>
<li><a href="">About</a></li>
<li><a href="">Services</a></li>
<li><a href="">Portfolio</a></li>
<li><a href="">Contact</a></li>
</ul>
JavaScript
function border(element){
element.style.borderTop ='3px solid';
element.style.borderColor = '#d22b2b';
}