Some New Design Changes and Improvements

I love this small project and is a real helpful way of making beginners learn the basic concepts of javascript using an inline code editor.

I would like to propose some small design changes to the overall website as a hope to see it merged into the repo.

I will be listing all the changes I will be making in the PR that I push, although if the mods want I can log them here as well.
Also aiming this as a contribution towards Hacktoberfest 2019.

Thanking you in advance 🥇🎉👨‍💻

/cc: tagging mods in hopes of increasing visibility @hereisnaman