Bootstrap 4 Sticky Footer Not Sticking

Update 2020 – Bootstrap 4.5+

Now that Bootstrap 4 is flexbox, it’s easier to use flexbox for the sticky footer.

<div class="d-flex flex-column min-vh-100">
    <nav>
    </nav>
    <main class="flex-fill">
    </main>
    <footer>
    </footer>
</div>

Bootstrap 4.0 Sticky Footer (4.0.0)
Simple Footer at Bottom Example (4.5.0)

Note: The flex-fill utility was included in Bootstrap 4.1 at later release. So after that release the extra CSS for flex-fill won’t be needed. Additionally min-vh-100 is included in newer Bootstrap 4 releases.

Also see: Bootstrap 4 – Sticky footer – Dynamic footer height