diff --git a/contain.c b/contain.c
index 96f3ed0..6a54147 100644
--- a/contain.c
+++ b/contain.c
@@ -98,30 +98,40 @@ GtkWidget *get_edit_space_page_new(){
   return space_grid;
 }
 
+//------------------------------------------------------------------------------
+
+GtkWidget *get_run_space_top_box(){
+  GtkBox *top_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2));
+  gtk_box_append (top_box, GTK_WIDGET (get_ELAPSED_TIME_ProgressBar()));
+  gtk_box_append (top_box, GTK_WIDGET (get_RUN_STOP_box()));
+  return GTK_WIDGET (top_box);
+}
+
 GtkWidget *get_run_space_left_box(){
-  GtkBox *left_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_VERTICAL, 0));
-  gtk_box_append (left_box, GTK_WIDGET (get_ELAPSED_TIME_ProgressBar()));
+  GtkBox *left_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_VERTICAL, 2));
   gtk_box_append (left_box, GTK_WIDGET (get_SPACE_IMAGE()));
-  gtk_box_append (left_box, GTK_WIDGET (gtk_separator_new (GTK_ORIENTATION_HORIZONTAL)));
   gtk_box_append (left_box, GTK_WIDGET (get_OBJECTS_and_SITUATIONS()));
   return GTK_WIDGET (left_box);
 }
 
 GtkWidget *get_run_space_right_box(){
-  GtkBox *right_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_VERTICAL, 0));
-  gtk_box_append (right_box, GTK_WIDGET (get_RUN_STOP_box()));
-  gtk_box_append (right_box, GTK_WIDGET (gtk_separator_new (GTK_ORIENTATION_HORIZONTAL)));
+  GtkBox *right_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_VERTICAL, 2));
   gtk_box_append (right_box, GTK_WIDGET (get_XYZ_box()));
-  gtk_box_append (right_box, GTK_WIDGET (gtk_separator_new (GTK_ORIENTATION_HORIZONTAL)));
   gtk_box_append (right_box, GTK_WIDGET (get_ZOOM_box()));
   return GTK_WIDGET (right_box);
 }
 
+GtkWidget *get_run_space_bottom_box(){
+  GtkBox *bottom_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2));
+  gtk_box_append (bottom_box, GTK_WIDGET (get_run_space_left_box()));
+  gtk_box_append (bottom_box, GTK_WIDGET (get_run_space_right_box()));
+  return GTK_WIDGET (bottom_box);
+}
+
 GtkWidget *get_run_space_page_new(){
-  GtkBox *page_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0));
-  gtk_box_append (page_box, GTK_WIDGET (get_run_space_left_box()));
-  gtk_box_append (page_box, GTK_WIDGET (gtk_separator_new (GTK_ORIENTATION_VERTICAL)));
-  gtk_box_append (page_box, GTK_WIDGET (get_run_space_right_box()));
+  GtkBox *page_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_VERTICAL, 2));
+  gtk_box_append (page_box, GTK_WIDGET (get_run_space_top_box()));
+  gtk_box_append (page_box, GTK_WIDGET (get_run_space_bottom_box()));
   return GTK_WIDGET (page_box);
 }
 
diff --git a/contain.h b/contain.h
index 215fbdc..1b2b391 100644
--- a/contain.h
+++ b/contain.h
@@ -9,8 +9,8 @@
 
 #define W 1920
 #define H 960
-#define W_IMAGE 1920 - 64
-#define H_IMAGE 960 - 46
+#define W_IMAGE 1920 - 20
+#define H_IMAGE 960 - 126
 #define H_STYLES_PANE 60
 
 void activate (GtkApplication *app, gpointer user_data);
diff --git a/contain.o b/contain.o
index abe3ee8..398af04 100644
Binary files a/contain.o and b/contain.o differ
diff --git a/display.c b/display.c
index 77fe073..e823a0b 100644
--- a/display.c
+++ b/display.c
@@ -16,18 +16,36 @@ GtkWidget *get_SPACE_IMAGE(){
   image = gtk_image_new_from_file("/home/jean/01/Gtk4/Getting_Started_with_GTK/image aXoris.png");
   image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/Getting_Started_with_GTK/image gg sketch.png");
   image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/Getting_Started_with_GTK/image E coli (Goodsell).png");
-  gtk_widget_set_size_request (GTK_WIDGET (image), W_IMAGE, 0);
+  gtk_widget_set_size_request (GTK_WIDGET (image), W_IMAGE, H_IMAGE);
   return image;
 }
 
 //------------------------------------------------------------------------------
 
+//  TODO  cliquer sur "RUN"  -->  affiche "STOP"  (et inversement)
+static GtkWidget *get_scroll_speed(){
+  GtkAdjustment *speed_adjust = gtk_adjustment_new (0, 0, 100, 1, 0, 0);
+  GtkWidget *scroll_speed = gtk_scrollbar_new (GTK_ORIENTATION_HORIZONTAL, speed_adjust);
+  gtk_widget_set_size_request (GTK_WIDGET (scroll_speed), 140, 2);
+  return scroll_speed;
+}
+GtkBox *get_RUN_STOP_box(){
+  GtkBox *RUN_STOP_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20));
+//  gtk_box_append (RUN_STOP_box, gtk_label_new ("\n"));
+  gtk_box_append (RUN_STOP_box, GTK_WIDGET(gtk_label_new ("      R U N\n     S T O P")));
+  gtk_box_append (RUN_STOP_box, get_scroll_speed());
+  gtk_box_append (RUN_STOP_box, GTK_WIDGET(gtk_label_new ("            STEP\n(show active rule)    ")));
+//  gtk_box_append (RUN_STOP_box, GTK_WIDGET(gtk_separator_new (GTK_ORIENTATION_VERTICAL)));
+  return RUN_STOP_box;
+}
+//------------------------------------------------------------------------------
+
 GtkBox *get_ZOOM_box(){
   GtkBox *ZOOM_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0));
   GtkWidget *ZOOM_Label = GTK_WIDGET (gtk_label_new (\
     "\n   TOOLS\n      ---\n   zoom\n      ---\n   (space\n   struct.)\n\
       ---\n   (arrows\n   struct.)\n"));
-//  gtk_widget_set_size_request (GTK_WIDGET (ZOOM_box), 30, 80);
+  gtk_widget_set_size_request (GTK_WIDGET (ZOOM_box), 30, 80);
   gtk_box_append (ZOOM_box, ZOOM_Label);
   return ZOOM_box;
 }
diff --git a/display.o b/display.o
index 4416ec4..bd8ba06 100644
Binary files a/display.o and b/display.o differ
diff --git a/hot.c b/hot.c
index 1938b8b..6f95185 100644
--- a/hot.c
+++ b/hot.c
@@ -13,41 +13,3 @@
 //  GTK_ORIENTATION_VERTICAL       GTK_ORIENTATION_HORIZONTAL
 
 
-//------------------------------------------------------------------------------
-
-//  TODO  cliquer sur "RUN"  -->  affiche "STOP"  (et inversement)
-static GtkWidget *get_RUN_STOP_label(){
-  GtkWidget *RS_label = gtk_label_new ("      R U N\n     S T O P");
-  gtk_widget_set_size_request (GTK_WIDGET (RS_label), 20, 30);
-  return RS_label;
-}
-
-static GtkWidget *get_scroll_speed(){
-  GtkAdjustment *speed_adjust = gtk_adjustment_new (0, 0, 100, 1, 0, 0);
-  GtkWidget *scroll_speed = gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, speed_adjust);
-  gtk_widget_set_size_request (GTK_WIDGET (scroll_speed), 2, 140);
-  return scroll_speed;
-}
-
-static GtkBox *get_speed_scrolling_box(){
-  GtkBox *speed_scrolling_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2)); // spacing = 2
-  gtk_box_append (speed_scrolling_box, GTK_WIDGET (gtk_label_new ("         ")));  //  AD HOC (pour "centrer")
-  gtk_box_append (speed_scrolling_box, get_scroll_speed());
-  return speed_scrolling_box;
-}
-
-static GtkWidget *get_STEP_by_STEP_Label(){
-  GtkWidget *RS_label = gtk_label_new ("  Step\n\n(show\nactive\n rule)");
-  gtk_widget_set_size_request (GTK_WIDGET (RS_label), 20, 30);
-  return RS_label;
-}
-
-GtkBox *get_RUN_STOP_box(){
-  GtkBox *RUN_STOP_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_VERTICAL, 20));
-  gtk_box_append (RUN_STOP_box, gtk_label_new ("\n"));
-  gtk_box_append (RUN_STOP_box, get_RUN_STOP_label());
-  gtk_box_append (RUN_STOP_box, GTK_WIDGET (get_speed_scrolling_box()));
-  gtk_box_append (RUN_STOP_box, get_STEP_by_STEP_Label());
-  gtk_box_append (RUN_STOP_box, GTK_WIDGET(gtk_separator_new (GTK_ORIENTATION_HORIZONTAL)));
-  return RUN_STOP_box;
-}
diff --git a/hot.o b/hot.o
index b130f1b..a1a8098 100644
Binary files a/hot.o and b/hot.o differ
diff --git a/myprogram b/myprogram
index 3303f1c..0e76cd5 100755
Binary files a/myprogram and b/myprogram differ
diff --git a/warm.o b/warm.o
index 457afbf..d24cb86 100644
Binary files a/warm.o and b/warm.o differ