https://dev.to/finiam/predictable-react-authentication-with-the-context-api-g10 https://dev.to/alexander7161/react-context-api-with-typescript-example-j7a
##CSS-in-JS https://blog.logrocket.com/using-styled-components-in-typescript-a-tutorial-with-examples/
##Breadcrumb https://jsmanifest.com/build-a-stunning-breadcrumb-component-in-react-with-plain-css/
https://codeburst.io/build-breadcrumb-component-using-react-js-458f0196d304