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As the first comment, you can put everything into a container and then create div for each section. This would really help when styling for responsiveness.

Thank you. I didn't understand what that meant before but I see what you mean. I'll retake the course asap 😊

all of your elements are just directly in the body. You need to divide up you elements and put the ones you want to keep together in a container that you can then control the layout with I think starting with this Certificate at Free Code Camp might help you https://www.freecodecamp.org/learn/responsive-web-design/

also under the resources tab here it list two free courses by Wes Boss - Flexbox and CSS Grid those would most likely be very helpful for you also