[gnome-builder] style: fix selectors for layout popovers

[Christian Hergert <chergert src gnome org>]

commit da6b04fb77f7b7b922078672b57e1bbca9472538
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jul 8 02:34:35 2017 -0700

    style: fix selectors for layout popovers
    
    popover is unfortunately the root for the selectors.

 data/themes/shared/shared-layout.css |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/data/themes/shared/shared-layout.css b/data/themes/shared/shared-layout.css
index 33102c2..b7b8eae 100644
--- a/data/themes/shared/shared-layout.css
+++ b/data/themes/shared/shared-layout.css
@@ -41,13 +41,13 @@ idelayoutgridcolumn.handle,
 idelayoutgrid.handle {
   border: 1px solid @borders;
 }
-idelayoutgrid idelayoutstack popover.title-popover list row {
+popover.title-popover list row {
   padding: 1px 0;
 }
-idelayoutgrid idelayoutstack popover.title-popover scrolledwindow {
+popover.title-popover scrolledwindow {
   min-width: 300px;
 }
-idelayoutgrid idelayoutstack popover.title-popover list {
+popover.title-popover list {
   background: transparent;
 }
 popover.title-popover list row box > image:first-child {