scroll up button

Is your feature request related to a problem? Please describe.
instead of scrolling all the way up ,adding a button that would scroll to directly navbar when someone reaches end of page.

Describe the solution you'd like
a scroll up button

The issue names no file, test, or entry point. Locate the page and navbar implementation, then identify the scrolling container; the work is done when a button at the end of the page scrolls directly to the navbar.

Written by the indexing model from the issue text.