Fix nav overflow for mobile devices

[visini]

Except on large mobile devices, users are unable to see the bottom items due to an overflow issue. This enables vertical scroll and increases the padding of the nav component.

Before

https://github.com/joeldrapper/phlex.fun/assets/10230606/92438655-cfdf-4bfa-9309-ad1e89c5f512

After

https://github.com/joeldrapper/phlex.fun/assets/10230606/d93146a8-f0f0-4aa6-81ac-452e2ea0201b

[joeldrapper]

Thank you!