How to make this?

Question

https://code.sololearn.com/WyFNkf7jnqnZ/?ref=app

Answer 1

Well the source code is all there, so, you could try modifying every little thing to learn what each thing does. I did this once to learn CSS and create something entirely new from the original.

alternatively, you can take the JavaScript course here on Sololearn!

original:
https://code.sololearn.com/WNgA5FX6sCVP/?ref=app

my edit:
https://code.sololearn.com/WEd6SZqDv4n8/?ref=app

Answer 2

I'm confused were i should put some codes. its just i cant understand sometimes. thank you