Is your feature request related to a problem? Please describe.
Describe the solution you'd like
Currently in the back end grouping of fields displays the fields in the tabs of the field groups
On the FRONT END display, if we had a 'class' for a GROUP, then the fields could 'be within a group if needed
This would help on the display on all custom fields.
You don't have to use the class, but if you could, then you could have the fields put into various 'div tags' and groupings for display purposes.
Additional context
There was a tentative effort in #36974.
Maybe someone is interested to re-visit it :-)