KB footer clipping over other elements

[jacktjong]

With the KB theme, the footer's absolute positioning interacts differently with the page, causing it to clip over page content on pages that are taller than 100vh. This is most likely due to the Clippy overlay.

A way to fix this would be to change #bottom's position to "relative", and #middle's min-height to 60vh. Not a perfect solution, but it'll stop the footer from blocking important elements like the "Sign Up" button for activities when on mobile.