Base apparel coming soon page

What are you most proud of, and what would you do differently next time?

I am proud of my JavaScript Code, Also I am Proud of how I used FlexBox and my CSS code.

What challenges did you encounter, and how did you overcome them?

I encountered challange about phone size layout.

What specific areas of your project would you like help with?

I have only one question, If you guys have any suggestions how could I have done phone size layout better, please tell me. Other than that I have no questions, But Please Give me FeedBacks and tell me about my mistakes In the code. Also Tell me what can be written better in the code, especially JavaScript, So I can get better at coding and improve my skills. Thanks!