Nav-bar Improvement [Front-end]

[wandergithub]

• Add gray social media icons. And rights of the page sentence.

• Nav var buttons letter should change to white when hover:

• Let's try to increase their font size a bit 20px.
  

• Improve background colors:
  Wrong behavior: Gray colors.
  Expected behavior: White.
  (Don't forget to correct background color on all pages that is convenient)