CSS3 for a full page background image.
Changed the css about ID to css about class to be able to use it repeatedly along the application.
Get the projects list from a text file with a public dropbox link.
Using a nested layout for the projects controller. The unordered list of projects is shared by the index and show actions.
Restricting the default routes for the necessary actions only. The way it was before i wasn't able to use routes like this one: 'projects_path'.