Common style for Carbs Linux projects

This is an ongoing style project for sharing certain elements in-between projects. This currently includes only the stylesheet for the website, but others will be added for both stagit and GNU Texinfo manuals.

Build

Building the stylesheet requires sassc, which is packaged in Carbs Linux repositories. However, the generated stylesheets are also tracked in the repository, so there is no need to rebuild them unless you edit the scss files. You can run make after a change to rebuild these files.