This is the source of the archived website for spin.off.
This site uses Cactus to build.
Cactus is a Python program, so Python 2.7 is required. Also pip is used to install cactus. Other packages that are required by cactus are automatically installed. So open a Terminal and run:
pip install cactus
If all goes well cactus can now be used.
To start a local webserver navigate to the repository in the Terminal and run:
cactus serve
You can then point your browser to http://127.0.0.1:8000 to view the local version. If you make any changes to the code this should be reflected almost immediently in the local website.