Footer: prevent footer overflow on short pages

[dfdan]

❤️ Thank you for your contribution!

Description

Add padding to .footer-bottom to prevent footer from overflowing. Closes #2183.

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[kpsherva]

Thank you for the fix, looks good to me!
The PR needs a rebase though, otherwise there are some previous commits and conflicts

[dfdan]

Rebased against master.

[github-actions]

This PR was automatically marked as stale.