JSFiddle - React, Tailwind, and code Playground

by Adam Smith

HTML

<div id="tri"> </div>

CSS

#tri{
  width: 0;
  height: 0;
  border-top-width: 20px;
  border-top-style: solid;
  border-top-color: transparent;
  border-right-width: 20px;
  border-right-style: solid;
  border-right-color: red;
}