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React environment variales

note: you will need to stop and restart the npm start create-react-app development environment/server to see this change

The app now has a fetch call to get the dogs programmed, but it doesn't work

because of CORS!!!!! 😡

BROWSERS implement this for security reasons

To fix it you program your server to speak to certain clients that it recognizes

IOW server uses HTTP headers and sometimes also a response to an OPTIONS request to say who's allowed to connect and what they're allowed to do

SEMANTIC UI -- fun library of Graphical UI components that are very easy to use and customize

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