I think because you have graduated to a more difficult level of this curriculum, you are now expected to go ‘out into the wilderness’ (well a little bit) and try something outside of the normal fCC preview terminal.
If you read to the end of the page, there is a suggestion on how to get started…
There is none.
You can build it on codepen(I saw many people do it),
You can build it locally, push it to GitHub and deploy via GitHub pages(that’s what I did).
You can use options with netlify or replit(I am not sure - did not see folks using those for this challenge).
You can come up with your own options.