Google emphasizes the importance of not hiding content, as it may not be counted by search engines. However, Google Cache has shown some discrepancies in understanding certain elements correctly. It's possible that what Google perceives as hidden might actually need to be shown, or vice versa.
My question pertains to CSS 3D transforms specifically. Consider this example: 3D Carousel CSS. If we were to eliminate Javascript and rely solely on CSS for rotation (perhaps as a replacement for a banner display), how would this affect SEO? Would items initially facing away from the user be considered hidden while those facing towards the user count as SEO-friendly content? Would Google disregard the 3D effects entirely and simply treat them as regular divs? Or could it possibly interpret all 3D elements as hidden?