Sign in form example can go offscreen if browser viewport is small
Created by: ngyikp
https://getbootstrap.com/docs/4.0/examples/sign-in/
If your viewport's height is small, the top part of the log in form can go offscreen:
Looks nastier on mobile with a horizontal keyboard active:
Fix is to set height: 100%
on html
and min-height: 100%;
on body
, removing height
property from body