#55830 add responsive css to toggle menu

public/opac/css/responsive.css

@@ -391,6 +391,20 @@
     
 
     /** MENU **/
+    .boite.menu_vertical.toggle_menu .menu_wrapper {
+        position: relative;
+    }
+
+    .boite.menu_vertical.toggle_menu .menu_wrapper > ul {
+        height: 0;
+        overflow: hidden;
+        position: absolute;
+    }
+
+    .boite.menu_vertical.toggle_menu.show_menu .menu_wrapper > ul {
+        height: auto;
+    }
+
     div:not(.show_menu)[class*="menu_horizontal"],
     #menu_horizontal {
         background: none;