'npm start' for run app
Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.
The page will reload when you make changes.
You may also see any lint errors in the console.
source: https://www.figma.com/file/nNHYDBZ4vvI3o9osS2vPl0/Templates-%2318.-More-on-Figma.info?node-id=10091%3A4v layout Computer course (no pixel perfect and good adaptive)