First of all a nice translation of the design to code.
I found out that Josh Comeau's CSS reset (Kevin Powell talked about it in that video) cuts off a part of the image on the lower (mobile) resolutions. I also see that happening in your project.
I replaced it with Meyer's CSS reset and then it worked properly.
On CDN: Eric Meyer CSS reset
@PedroTheBrave
Posted
@Aphelion-im ah thanks for that, I'll check out Eric's reset. I need to look more into images really and how they interact with responsiveness