Advanced Custom Fields - Custom WYSIWYG Styles Hooks By WDM
Version 1.0 – Gives you the possibility to style the TinyMCE Editor of ACF with different custom styles. Every ACF WYSIWYG field can be styled differently. Put a “/css/tinymce.css” file in your theme and start styling. Every ACF WYSIWYG Editor field will have a special css-class in the body tag, which helps you to identify it. By WDM.