How do I get animations like entrance effects and mouse effects on a website the AI builds?

Ask for them in your prompt. Entrance animations are the effects when the page first loads and elements appear. You can also ask for mouse animations (an animated cursor effect), ask for the site to be interactive, and ask for buttons that move or shimmer on hover. These touches make a site feel interactive instead of static.

The AI can build whatever you can describe, so you can also ask for a theme, for example a comic book look with sound-effect style animations.