This cell was contributed by Philippe Rivière @fil. While I expected there would be some sort of style guide accompanying the SDG, I had not seen it prior to @fil's suggestion (thanks Fil!). It's a pretty interesting presentation and guide, and I encourage anyone reading this to check out the link commented into the cell above. I would love to see some (very strictly conforming) renderings of the SDG achievements tied into data on Observable. If you know or have done any, please let me know!