Google Chrome's new experimental Shared Element Transition API enables single-page applications to transition from page to page smoothly and seamlessly as the user navigates, much like a native application might. Maxi Ferreira has put together a lovely proof of concept of page transitions working in a multi-page application. He joined me on stream to show off how it can be done with web platform APIs and a little help from Astro!
https://someantics.dev/astro-page-transitions/