In a long distant future the web browsers we use today could be replaced by #NOSTR clients.
The website could base his content on notes and we can have a note that communicate stiling and some hierarchy guides that the client then elaborate it in his way. In the end a website function as a graph of links, you can stile and positioning graphically them using common standards.
Javascript complex programs used commonly in modern website could be replaced by new solutions based on #ecash.
Maybe when time will be mature we can elaborate NIPs to make #web69420 happens 🫡