This commit:
1. Removes the Primer `my-md-0` spacing from the `#wiki-footer`
container.
This gives it margins along the Y axis, spacing it out from
the sidebar and main wiki content containers on `md` and larger
screens.
2. Adds `px-4` padding to the `#footer-content`. which makes the
This makes the footer content inset the same way that sidebar
content is. This makes the content look more uniform on mobile
devices, when the sidebar and footer are presented one before
the other.
Benjamin Willems
de47f4ffab