Remove rounded corners from map controls
Remove rounded corners from map controls

Also includes a quick fix for high contrast mode.
The buttons are separated by a horizontal line by
default, styled as a border above the 2nd button.

Both buttons use the border when focused in high
contrast mode to provide a form of outline.
This takes away the line dividing them, because
you can only have one border.

The buttons are still separated by a 1px margin so
this just sets a background colour on the
container to simulate the divider.

alphagov/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin