Clean, minimalistic designs
You should search for clean minimalistic web site designs on Google and it should yield many results.
But apart from that let me add that creating a pure type-only designs that actually look stunning is hard. Some minimalistic imagery is usually added to improve the whole experience. Sometimes these images are even custom type that would be otherwise too hard to set in HTML+CSS.
There are numerous sites that are designed this way. Let me show you one where it seems that everything is type, but one element in particular is actually graphic. And that's the title.
There are numerous others as well. Just check this Google search results and check them out yourself.