Sneakers Product Page

I enjoyed building this project and it is fully responsive. However I needed to finish the project quickly to add to my portfolio causing me to leave out some details for mobile screens. Some of these details include making the width of the cart take up the whole width, making the menu bar take up the left side with an overlay e.t.c Let me know what you think of the project in general and whether it still looks good on small screens. Thank you in advance!