JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://raw.githack.com/Nycto/PicoModal/master/src/picoModal.js"></script>

JavaScript

var modal = picoModal(
      "<p>Ah, the pitter patter of tiny feet in huge combat boots.<p>"
      + "<p><a href='#' class='dismiss'>Dismiss</a></p>"
  ).show();

  document.body.addEventListener('click', function(event) {
    if( /\bdismiss\b/.test(event.target.className) ) {
      modal.close();
    }
  });