npm install -g create-react-app
create-react--version

create-react-app compassion
cd compassion

yarn
yarn start


yarn add styled-reset
yarn add node-sass


yarn add react-router-dom


src directory
*Components
-Footer
-Header

*Pages
-Main

*styles
-index.scss
-reset.scss
-media.scss

아래 블로그 참고!!
https://eunvanz.github.io/react/2018/06/05/React-create-react-app%EC%9C%BC%EB%A1%9C-%ED%94%84%EB%A1%9C%EC%A0%9D%ED%8A%B8-%EC%8B%9C%EC%9E%91%ED%95%98%EA%B8%B0/