First Portfolio - Feedback Appreciated

Link: https://codepen.io/Luke_Ross/full/QmYWjG/

Known issues:

  • Looks horrible on mobile devices (I’ll fix this as I learn more)
  • In IE, the “back to top” button in the bottom corner appears lower than it should, but the link is where the button should be (Don’t know how to fix this. Advice?)
  • First image doesn’t start at the top like it should in CodePen, but does as an html file (I wrote this in Atom) (Again, not sure how to fix, might just tinker around with it until it works)

I’d appreciate any and all feedback. This took longer than expected, but I tried my best.
Thank you for taking the time to take a look.