- the on screen keyboard is not an overlay in most cases. the semi-opacity
is distracting.
- use opaque background color
- see discussion on https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/1028
FIXME: whitespace at the bottom without scaling everything down (padding)
FIXME: don't behave as overlay anywhere (even for entries above the fold)
- Move the more generic %button style before %bubble_button to reduce
ugly overrides.
- Remove sizing factors from _drawing.scss to reduce ugly !importants.
- Make the %bubble_button style more consistent.
- Add missing focus styling to %notification_bubble.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/931