Enable CSS for CMS Users
The HTML editor used for editing content has a dropdown called 'Apply CSS'. This is used to allow the CMS user to apply CSS to their content. To add CSS classes to this dropdown you will need to upload a CSS file named enso-editor-styles.css to your website's root directory. Any CSS classes in that file will appear in this dropdown. And maybe it goes without saying but make sure to link the enso-editor-styles.css file to your layouts so they work.