This project is based on the multi-page form created in SvelteKit here: https://svelte.dev/repl/7b05d57dcdc04f49be72844e4b2825b3?version=3.44.0.
It has been converted to TypeScript with some refactoring, and also includes Svelte stores and sessionStorage. A live preview is available here: https://5l6b9y-5173.preview.csb.app/