JSFiddle - React, Tailwind, and code Playground
HTML
<p>
CSS
p { font-size: 20em; }
JavaScript
var el = document.querySelector('p'),
arr = 'ππππππππππππ'.split(''),
i = 0;
setInterval((function lolwat() {
el.innerHTML = arr[i++] || arr[i = 1, 0];
return lolwat;
}()), 500);