JSFiddle - React, Tailwind, and code Playground

HTML

<div class="css-shapes"></div>

CSS

.css-shapes{ 
    height: 250px; 
    width: 0px; 
    border-left: 99px solid #f00fff; 
    border-right: 99px solid #f00fff; 
    border-bottom: 39px solid transparent;
}