[gnome-nibbles] Fix css name conflict

[Iulian Radu <iulianradu src gnome org>]

commit a262caa8361c982cd1533b177e7fdcd085386833
Author: Iulian Radu <iulian radu67 gmail com>
Date:   Mon Aug 10 01:04:29 2015 +0300

    Fix css name conflict

 data/nibbles.css |    4 ++--
 data/nibbles.ui  |    9 +++++----
 2 files changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/data/nibbles.css b/data/nibbles.css
index a4ddc70..e9e6d1a 100644
--- a/data/nibbles.css
+++ b/data/nibbles.css
@@ -1,7 +1,7 @@
 GtkApplicationWindow.main-window {
-    background: rgba (255, 255, 255, 0);
+    background: rgba (0, 0, 0, 1);
 }
-.title {
+.menu-title {
   font-size: 3em;
 }
 .tip {
diff --git a/data/nibbles.ui b/data/nibbles.ui
index de4db45..fdd1269 100644
--- a/data/nibbles.ui
+++ b/data/nibbles.ui
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <object class="GtkHeaderBar">
+    <object class="GtkHeaderBar" id="headerbar">
         <property name="title" translatable="yes">Nibbles</property>
+        <property name="show-close-button">True</property>
     </object>
     <object class="GtkApplicationWindow" id="nibbles-window">
         <property name="title" translatable="yes">Nibbles</property>
@@ -65,7 +66,7 @@
                                             <object class="GtkLabel">
                                                 <property name="visible">True</property>
                                                 <property name="label" translatable="yes">Welcome, 
worms.</property>
-                                                <style><class name="title"/></style>
+                                                <style><class name="menu-title"/></style>
                                             </object>
                                             <packing>
                                                 <property name="pack-type">start</property>
@@ -104,7 +105,7 @@
                                         <property name="visible">True</property>
                                         <property name="label" translatable="yes">Number of 
players</property>
                                         <property name="valign">3</property>
-                                        <style><class name="title"/></style>
+                                        <style><class name="menu-title"/></style>
                                     </object>
                                     <packing>
                                         <property name="pack-type">start</property>
@@ -226,7 +227,7 @@
                                         <property name="visible">True</property>
                                         <property name="label" translatable="yes">Controls</property>
                                         <property name="valign">3</property>
-                                        <style><class name="title"/></style>
+                                        <style><class name="menu-title"/></style>
                                     </object>
                                     <packing>
                                         <property name="pack-type">start</property>