button style update

IHM_Retouche_Photo/ressource/stylesheet/QTWhite.css

@@ -34,7 +34,7 @@ QMenuBar::item:pressed {
 	border-top-right-radius: 10px;
     border-bottom-right-radius: 10px;
     background-color: white;
-    margin-bottom: 26px;
+    margin-bottom: 15px;
 }
 
 #_toolbox {
@@ -53,6 +53,7 @@ QMenuBar::item:pressed {
     min-height: 20px;
     padding-bottom: 2px;
     padding-top: 2px;
+    margin-bottom: 20px;
 }
 #_add_selectable_element:hover {
     background-color: #dadada;
@@ -70,6 +71,7 @@ QMenuBar::item:pressed {
     min-height: 20px;
     padding-bottom: 2px;
     padding-top: 2px;
+    margin-bottom: 20px;
 }
 #_remove_selectable_element:hover {
     background-color: #dadada;