Responsive landing page

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

I had this exercise lying around for some time and just couldn't figure out how to add the curves, how to properly position my image. Upon refactoring the code I'd written all this time ago, I noticed how much progress I've made in my understanding and use of css. I took a few different approaches, putting the focus a bit more on utility classes, and narrowed down my css, wherever I saw fit.