It depends what you mean by nice and how complex it is? I built my own site which is basically my front end access to all the services I host. I wrote it extremely basically in html and got just the very basic context of what I wanted setup. Then I put the whole thing into Claude, and asked it to tidy it up. Then I started a new Claude session and put the whole thing in again and asked it to modernise it. Then did the same again but asked it to improve it. After about 5 or 6 run thoughts, I was happy with it. But it only has 2 pages, the first main page for anybody, and the 2nd admin page password protected just for me.