Add html code / other formats to Dialog cards

Hey,

is it possible to make some individual changes of the backside from the dialog card (also other types of h5p)?

For example like a heading, a list or something. I really would be happy to chose more than "paragraph". I also would appreciate it, if i could add my own html code. is that possible?

Thank you so much, that would me help to create the e-learning content like my target group needs it.