Thread:Tigrouille/@comment-27996636-20170929165017/@comment-27095448-20171011130408

You missing one CSS: .GalleryBanners .wikia-slideshow-images.neutral { height: 100px !important; }

Add gallery in div. If you want custom class, gallery must be in div, span, table or wathever, just need to add class to an element and gallery in.