Header should not hide anchor link
If I surf to https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/nginx.md#using-a-non-bundled-web-server I can't read the header since it is hidden by the top bar
Solutions:
- http://stackoverflow.com/questions/10732690/offsetting-an-html-anchor-to-adjust-for-fixed-header
- https://github.com/twbs/bootstrap/issues/1768
- https://github.com/twbs/bootstrap/issues/193
- http://pixelflips.com/blog/anchor-links-with-a-fixed-header
- https://wordpress.org/support/topic/internal-anchor-lands-below-linked-to-header-how-to-fix-this-1