This is the source code of the articles found at https://fabiensanglard.net/dc.
Start your own local instance of a php server.
$ php -S localhost:8080
See your changes in a web browser: http://localhost:8080.
If you want to make a change to the illustration, you should change them in illu_masters and then use the illu_masters/publish.sh script which converts them from object to path. This is done so browser without Roboto font can see the illustration as intended. And of course, when you do that, you should have Roboto Mono installed on your machine when you run the script.