JSON API is not working in Random quote machine project

Before getting into the project, there was quick lesson on using APIs, I am applying that to get random quotes from server but it is not working. I will be thankful for help.

The site you’re trying to get quotes from doesn’t provide CORS, so you won’t be able to get quotes from there on client side.

Thank you for your answer :).
CORS was not explained on fcc, I will study it. And I guess there will be alot more to study. Can you suggest me some link which provide CORS?