JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.ckeditor.com/4.5.5/standard-all/ckeditor.js"></script>
<div id="editor">
					<h1>Hello world!</h1>
					<p>I'm an instance of <a href="http://ckeditor.com">CKEditor</a>.</p>
    <p>writing a very long word with latest ckeditor, a horizontal scroll bar will appear using IE11 & Firefox. like "abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc" without white-space in the string. </p>
				</div>

JavaScript

CKEDITOR.addCss( 'body {word-wrap:break-word;' );
CKEDITOR.replace( 'editor' );