CEUR-WS organizes published volumes as flat directories containing the papers (mostly PDFs) and the index.html file. The index file includes the title of the proceedings, its editors, time and location of the event and then the table of contents where the paper titles directly point to the paper PDFs.
This is a very simple layout that we used since 1995. Commercial academic publishers have lots of additional texts decorating the page of a proceedings and the page for an individual paper. Some of that information is more about the publisher, not the proceedings.
I believe that the strict focus on the academic content and the simplicity is one of the factors that contributed to the success of CEUR-WS.
Simplicity = Concentrate on the essence