JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.ckeditor.com/4.7.0/standard/ckeditor.js"></script>
<div id="editor1">
	<table border="1">
		<tfoot>
			<tr>
				<th>Heading</th>
				<th>Heading</th>
				<th>Heading</th>
			</tr>
			<tr>
				<td>Cell</td>
				<td>Cell</td>
				<td>Cell</td>
			</tr>
			<tr>
				<td>Cell</td>
				<td>Cell</td>
				<td>Cell</td>
			</tr>
		</tfoot>
		<tbody>
			<tr>
				<td>Cell</td>
				<td>Cell</td>
				<td>Cell</td>
			</tr>
			<tr>
				<td>Cell</td>
				<td>Cell</td>
				<td>Cell</td>
			</tr>
			<tr>
				<td>Cell</td>
				<td>Cell</td>
				<td>Cell</td>
			</tr>
		</tbody>
	</table>
</div>

JavaScript

CKEDITOR.replace( 'editor1' );