Deployment of mean app with both client and server serving differently on heroku

I am a fresher in mean stack and make a app with help of tutorial of instagram clone with authorization and fetching instagram profile of the logged in user.

Now as it was made with cors in express we have to serve both client and server remotely
I am not getting idea how to deploy it
My github link of project is https://github.com/darshitvagadiya/instagramclone

Any help will be appreciated.

Source: AngularJS