The web keeps changing, but the fundamentals of a useful digital experience remain surprisingly stable: clarity, speed, accessibility and a strong sense of purpose. New tools should make those fundamentals stronger, not distract from them.
Motion and 3D can give an interface a sense of depth. Used carefully, they guide attention, explain relationships and create moments worth remembering. Used everywhere, they compete with the content and make a site harder to use.
Start with the message and the user's goal. Build a clear hierarchy, test it on real devices, and add motion only when it improves understanding. The next version of the web will belong to experiences that balance ambition with restraint.