Navigation has to be given some special consideration when it comes to single-page sites, to make sure visitors can get back to the home section of the page without issues, and navigate from any one section to any other section. This is often achieved through sticky headers or repeating navigation in each section.
The sites below are all excellent examples of single-page websites. They’re both usable and aesthetically-pleasing, and take full advantage of the single-page format.
The Roaaar website includes a “return to top” link at the bottom of each section, which makes it easy for visitors to get back to the navigation in the header.
Duplos by Ricardo Mestre
The Duplos site takes a different approach, putting the main content at the bottom of the page. Navigation takes you further up the page, rather than down.