React environment variables
https://create-react-app.dev/docs/adding-custom-environment-variables/
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
https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
BROWSERS implement this for secrutiy reasons
https://en.wikipedia.org/wiki/Cross-origin_resource_sharing
To fix it, you program your server to speak to certain clients that it recognizes
[TODO: figure out what IOW server is]
IOW server uses HTTP headers and sometimes also a response to an OPTIONS request to say who is allowed to connect and what they're allowed to do
Uses SEMANTIC UI -- fun library of Graphical UI components that are very easy to use and customize
https://react.semantic-ui.com/
To install it,
npm install semantic-ui-css semantic-ui-react
Then index.js Add this line
import 'semantic-ui-css/semantic.min.css'
before this line
`import './index.css'