Fixes jitter on scroll from top that occurred due to ScrollIntoView and Hash update conflicting with each other
Re-made the top and bottom overflow shadows to symbolise there is more to scroll. This was/is conflicting with the active menu item that also has shadows (closes https://github.com/cncf/cncf.io/issues/540)
https://pr-585-cncfci.pantheonsite.io/about/faq/
The Branding page will need updating to remove the manually inserted Shadow HRs