Download the zip file, open your code editor and run the project in your browser, e.g. by clicking on the index.html file.
Notes to self:
'How to deploy a HTML/CSS/Js static page to Heroku. https://medium.com/@winnieliang/how-to-run-a-simple-html-css-javascript-application-on-heroku-4e664c541b0b'
Use Heroku git to deploy changes: '$ git add . $ git commit -am "make it better" $ git push heroku master'