Create a way to denote pages without a valid return method.

ie: in the project guidelines it is outlined that there should be a way to navigate back to the main directory.

If a person's submission doesn't have a method to return to the directory a css style should be applied to the project on each page.

Create a class, that will somehow make it visually denotable when a page has no link back to the main directory.

Start by reading the project guidelines and inspecting how submitted pages currently link back to the main directory. Define the CSS class and the visual treatment for pages without that link, then verify the treatment is applied consistently on each affected page. Done means the absence of a return link is visually denotable without changing pages that already provide one.

Written by the indexing model from the issue text.