JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/ckeditor/4.3.2/ckeditor.js"></script>
<textarea id="global">&lt;p&gt;Toolbar in global config&lt;/p&gt;</textarea>

JavaScript

CKEDITOR.editorConfig = function(config) {
    config.uiColor = "#ff0000";
    config.width = 400;
    config.height = 200;
    config.toolbar = [["Bold", "Italic"]];
};
CKEDITOR.replace("global");