[BUG] [Example] Footer does not stay at the bottom of the screen

[dylandbl]

• Mobile 📱
• Desktop 🖥

Describe the bug
On the mobile site, the footer does not stay at the bottom of the screen when the CAPTCHA is opened.

Steps to reproduce the behavior:

1. On mobile, open the CAPTCHA.
2. Scroll down.
3. The footer will be floating behind the CAPTCHA popup, not at the bottom of the screen.

Expected behavior
The footer should sit at the very bottom of the site.