There is some alignment issue in the following trilogy or S[OFU] site's account recovery page.
The Sign up link's border bottom is missing.
You can find the issue in the following links:
- https://stackoverflow.com/users/account-recovery
- https://serverfault.com/users/account-recovery
- https://superuser.com/users/account-recovery
Can be able to reproduce this in the following browsers:
Firefox: 49.0.1
Chrome: 51.0.2704.103 m
OS: Windows 8
Screenshot for reference:
Update: The border bottom issue is in Stack Apps account recovery page too. There extra border is displaying under the Login tab.