I past test, but design looks off

I am working on media query, why the link will not move or wrap. I would like to move the entire list to the left so that it is not cutting over to the new field.

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

I would suggest to work with the width or min-width of nav, and with margin-left or padding-left of .main-section.