I think it has something to do with following an HTML card? Maybe something about the iframes in the HTML card? When I reorder the inclusions so the HTML card comes last, the styling on the Filmography card is fine.
I don't think this is a Wagn issue. Maybe your HTML is off? Kind of looks like there are more close div tags than open ones in that html. http://wagn.org/Padding_around_included_card_is_wrong