[aisleriot] board: Try to work with newer gtk+

[Christian Persch <chpe src gnome org>]

commit 3f79ea22e8ac961316dd844a4ce3db87b2997769
Author: Christian Persch <chpe gnome org>
Date:   Sun Mar 20 11:22:53 2016 +0100

    board: Try to work with newer gtk+

 src/ar-style-gtk.c    |    2 +-
 src/board-noclutter.c |    4 ++++
 2 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/src/ar-style-gtk.c b/src/ar-style-gtk.c
index 4b186fb..77636f8 100644
--- a/src/ar-style-gtk.c
+++ b/src/ar-style-gtk.c
@@ -45,7 +45,7 @@ static GtkStyleProvider *
 ar_style_provider_new (void)
 {
   static const char css[] =
-    " AisleriotBoard {\n"
+    " AisleriotBoard, aisleriot-board {\n"
       "background-color: " DEFAULT_BACKGROUND_COLOR_STRING ";\n"
       "-AisleriotBoard-selection-color: " DEFAULT_SELECTION_COLOR_STRING ";\n"
       "background-image: url('resource:///org/gnome/aisleriot/art/baize.png');\n"
diff --git a/src/board-noclutter.c b/src/board-noclutter.c
index 8ff985c..a418b3d 100644
--- a/src/board-noclutter.c
+++ b/src/board-noclutter.c
@@ -3419,6 +3419,10 @@ aisleriot_board_class_init (AisleriotBoardClass *klass)
 
   _ar_style_gtk_class_install_style_properties (widget_class);
 
+#if GTK_CHECK_VERSION (3, 19, 5)
+  gtk_widget_class_set_css_name(widget_class, "aisleriot-board");
+#endif
+
 #ifdef ENABLE_KEYNAV
   /* Keybindings */
   binding_set = gtk_binding_set_by_class (klass);