All on-page image blocks: .intrinsic:hover img {opacity: 0.75 !important;} Card Layout .design-layout-card:hover img {opacity: 0.75 !important;} Overlap Layout .design-layout-overlap:hover img {opacity: 0.75 !important;} Collage Layout .design-layout-collage:hover img {opacity: 0.75 !important;} Stack Layout .design-layout-stack:hover img {opacity: 0.75 !important;} Poster Layout .design-layout-poster:hover img {opacity: 0.75 !important;}