Wagtail Streamfield

I was developing a content management system for permanent employment for a large scalable application when I had to make a decision on the CMS tech to use, and it was a close call between Mezzanine and Wagtail. Both have a beautiful user interface, and can easily produce tailored pages. Wagtail won over in this case, because it is more of a blank slate than Mezzanine. There is less built in, and more documentation on how to create things.scree
Wagtail Streamfield
So the field that generates this paragraph is a text field. However a richtext field would allow me to use one of the two editors provided by Wagtail, Hallo and Draftail. The problem I need to overcome is to get the editors to use the correct utility classes needed by tailwind. An ordered list for example has no numbers or markers by default, but needs the class list-decimal.