JSFiddle - React, Tailwind, and code Playground

HTML

<h1>
  Hello World how are you
</h1>

CSS

h1{
  font-family:Helvetica, Arial, sans-serif;
  font-size:10vw;
  color:yellow;
  font-style:italic;
}

JavaScript

var steps = 10,
	i,
	R = 0.6,
	x,
	y,
	theStyle = '1vw 1vw 3vw #005dab';
for (i = -steps; i <= steps; i += 1) {
	x = (i / steps) / 2;
	y = Math.sqrt(Math.pow(R, 2) - Math.pow(x, 2));
	theStyle = theStyle + ',' + x.toString() + 'vw ' + y.toString() + 'vw 0 #005dab';
	theStyle = theStyle + ',' + x.toString() + 'vw -' + y.toString() + 'vw 0 #005dab';
	theStyle = theStyle + ',' + y.toString() + 'vw ' + x.toString() + 'vw 0 #005dab';
	theStyle = theStyle + ',-' + y.toString() + 'vw ' + x.toString() + 'vw 0 #005dab';
}
document.getElementsByTagName("H1")[0].setAttribute("style", "text-shadow:" + theStyle);