Board Thread:Support Requests - Getting Technical/@comment-39833655-20200126180629/@comment-27958705-20200127053142

.portable-infobox, .pi-data and .pi-title are right selectors. other ones are wrong: there is no elements matching to ".info-box", ".infobox" or ".type-character".

you can use browser inspect (rmb - inspect or smth similar) to see what classes you supposed to use. Help:Infoboxes and related articles will be helpfull, too.