[gnome-builder] style: tweak outline radius for selected flowboxchild

[Christian Hergert <chergert src gnome org>]

commit 5c68aec72bafc3da0f0694719388069d284875df
Author: Christian Hergert <chergert redhat com>
Date:   Sun Sep 3 16:15:35 2017 -0700

    style: tweak outline radius for selected flowboxchild

 data/themes/shared/shared-greeter.css |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/data/themes/shared/shared-greeter.css b/data/themes/shared/shared-greeter.css
index ba2dbec..3fb3b83 100644
--- a/data/themes/shared/shared-greeter.css
+++ b/data/themes/shared/shared-greeter.css
@@ -1,5 +1,7 @@
 greeter flowboxchild {
   border-radius: 11px;
+  outline-offset: -3px;
+  -gtk-outline-radius: 9px;
   min-width: 164px;
   min-height: 164px;
 }