CSS for tv series guest stars in grid view

[zelpi]

I inserted this (replacing only #guestCastCollapsible), but it didn't work:

#guestCastCollapsible .card.overflowPortraitCard {
width: 4.2cm;
font-size: 90%;
}
#guestCastCollapsible .personCard {
width: auto;
}
#guestCastCollapsible .personCard .cardBox {
margin-bottom: 0px;
margin-right: 20px;
}
#guestCastCollapsible {
flex-wrap: wrap;
}
.itemDetailPage .cardText {
text-align: left;
}
.itemDetailPage .textActionButton {
text-align: left;
}