Please tear this apart. I literally learned how to code within the last 3 days so anything you can tell me will help me learn and improve (please be constructive or at least clear!) Thank you all!!!
Very impressive for 3 days. I suggest checking the full page view out on mobile with dev tools (click the phone/tablet icon on top left). You will find a couple problems there.
Also, its a good idea to check the official W3 Validator for any errors. Keep in mind some of the errors you may see like iframe are because of CodePen, just posting this so you can keep in mind for future use.