Product Landing Page: Margins and media query

Hello everyone!
I’m working in the project: Product Landing Page but I’ve strugglin a little two things:
First : The margins in the icons: I used one class to arrenge the icons and one class to arrenge the titles.

Second: When I apliedd the media query: My both navbar doesn’t stick in their positions. They move when I move the scrollbar.

Here’s my code pen with the code. I aprecciate any help


See the Pen Fork Me! FCC: Test Suite Template by leonardootc (@leonardootc) on CodePen.