[gnome-builder] themes: avoid transitions on bottom borders

[Christian Hergert <chergert src gnome org>]

commit 6dafce818d06731e15ceaa511df449b45bc801ed
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jan 21 18:55:10 2019 -0800

    themes: avoid transitions on bottom borders

 src/libide/themes/themes/shared/shared-greeter.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libide/themes/themes/shared/shared-greeter.css 
b/src/libide/themes/themes/shared/shared-greeter.css
index 945d3101e..b5c27e882 100644
--- a/src/libide/themes/themes/shared/shared-greeter.css
+++ b/src/libide/themes/themes/shared/shared-greeter.css
@@ -6,10 +6,10 @@
  */
 .greeter list row {
   border-bottom: 1px solid alpha(@borders, 0.2);
+  transition-property: background, opacity;
 }
 .greeter list row:last-child {
   border-bottom: none;
-  transition-duration: 0;
 }
 .greeter frame border {
   border-color: alpha(@borders, 0.6);