I disagree, I think the "nice little polished experience" is the difficult part.

In practice building something like this with resources that exist today can still mean a stream of issues specific to a given platform, browser, library, programming language, IDE, issues related to a combination of any earlier two and a yak that needs shaving[1].

Meanwhile this project is described as[2]:

> fully optimized for both desktop and mobile browsers, with user controls and UI components tailored for each device, ensuring intuitive navigation and interaction across all platforms.

If this process was easy and well documented, Netlify wouldn't hire an external agency.

[1]: https://en.wiktionary.org/wiki/yak_shaving

[2]: https://www.littleworkshop.fr/projects/5milliondevs/

> I disagree, I think the "nice little polished experience" is the difficult part.

Right, I agree, most of the time will be spent in the polish. But is there really no resources out there on how to polish? Assuming there isn't, what would you want a tutorial to contain to make it apply to a wider audience, as polish is typically hyper-specific to the project.

> If this process was easy and well documented, Netlify wouldn't hire an external agency.

Companies don't typically hire external agencies because something is difficult for them to do per se, but more that it would be wasteful for them to spend the time building something like that instead of focusing on things core to the business.

FWIW: I'm asked parent about this in order to see if there are actual gaps in the available resources today for what parent wanted to do, hence the question to specify what exactly they're looking for. I guess "how to polish" is a valid answer, but again, there are resources out there to help understand how to approach that.