Project: fastify
Task (easy): 1) If Page Not Found, shows 'Oops! Looks like you have wandered off the beaten path.' in h1 tag
2) Add button(.not-found-go-to-home) to navigate to '/'
3) When click '🛍️ WebBench Shopping Mart' in header, navigate to '/'
4) Create CSS to beautify UI
5) Hint: Use Fastify's setNotFoundHandler to handle 404 errors