My first reaction to this was, "why?" The skeuomorphism of the low-res paper background and ugly type is horrible. But, reading the comments here, apparently so

My first reaction to this was, "why?" The skeuomorphism of the low-res paper background and ugly type is horrible. But, reading the comments here, apparently some people like it, so ok. But you can see all the CORS issues this is throwing up. Rather than a 100% js app, why not call a function which fetches the content and caches it too? CORS issues begone, and caches too! You don't need an expensive server setup, have a look at AWS Lambda or Azure Functions.