By looking at those sites and their sources, you may better see what’s possible and how it’s achieved.

ddoc documentation

ddoc’s own documentation is of course made with ddoc.

ddoc columns example

ddoc-columns

This example site features a different layout, with the site navigation permanetely visible on the left.

bacon’s website looks a lot like the one of ddoc, with different colors but the same layout.

broot’s website is similar to ddoc’s too, but shows how a bigger documentation fits ddoc without problem.

broot uses additional scripts (in /src/js) and stylesheets (in /src/css) to highlight code and to group block codes and wrap them with tabs.