Eventcalendar Popover styling on MUI6

Hi, I’m having trouble with my migration from Mui4 to Mui6 due to the different approach of creating styles. Is there a way to make the view.popover.popoverClass on Eventcalendar work the same from Mui4 to Mui6 where you can just assign the style there? I can’t seem to put a parent class for it since the popover is rendered outside the element so I can’t modify the layout of the classes inside the popover. I’m quite stucked here. Help would really be appreciated. Thank you so much!