[gnome-builder] prefs: remove 1px border from sidebar

[Christian Hergert <chergert src gnome org>]

commit 6d994332fe9d6023cc4fff081373e6e16354335b
Author: Florian Bäuerle <florian bae gmail com>
Date:   Fri Jan 23 01:06:00 2015 +0100

    prefs: remove 1px border from sidebar
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743385
    
    Signed-off-by: Florian Bäuerle <florian bae gmail com>

 src/resources/css/builder.Adwaita.css |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/css/builder.Adwaita.css b/src/resources/css/builder.Adwaita.css
index c5d85b0..6e29d3a 100644
--- a/src/resources/css/builder.Adwaita.css
+++ b/src/resources/css/builder.Adwaita.css
@@ -93,6 +93,9 @@ GtkStackSwitcher.gb-workspace-switcher > GtkRadioButton:active {
 /*
  * Preferences sidebar style.
  */
+.preferences.sidebar GtkViewport {
+     border: 0px;
+}
 .preferences.sidebar GtkListBox {
     background-color: shade(@theme_bg_color, 0.99);
 }