Change H1 to custom fields {solved}

I would like to change the font size and family in some fields like category name but i dont want to do it with h1, how can i do it?, can you make an example. I think it should be changed in listing.php but how?.

Same thing if i want to add custom fields ther like category and under that display a short description wich it would no be variable, how can i do it?

Tahnk you

no problem i managed to do it thank you