JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/tinymce/4.5.5/tinymce.min.js"></script>
<h3>TinyMCE Font Add Example</h3>
<textarea id='editor'></textarea>

CSS

@import url('https://fonts.googleapis.com/css?family=Lato');
@import url('https://fonts.googleapis.com/css?family=Roboto+Condensed');

JavaScript

tinymce.init({
	selector: '#editor',
  plugins: 'code',
  toolbar: [
        "undo redo | bold italic | fontselect | code"
    ],
  font_formats: 'Roboto Condensed="Roboto Condensed", sans-serif;Lato=lato;Arial=arial,helvetica,sans-serif;',
})