How I built this website on a Raspberry Pi https://news.ycombinator.com/item?id=42712378

I don't know what's going on with the styles on this site, but it's cut off on both sides on my phone. It's unreadable.

I would highly recommend not putting your home network at risk and poking holes into it. If you just self host a public site on your home network you should consider using cloudflare tunnel.