JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#contact">Contact</a>
<br />
<a href="#info">info</a>
<br />
<a href="/videos/video.mp4">Gerse video jonge!</a>

JavaScript

$(document).ready(function() {
$("a[href*=#]").css("font-weight", "bold");        
});