Исправил css окна

source/menu_os.cc

@@ -66,6 +66,13 @@ void Menu_os::init() {
             map_menu_level_1[key]->boxLevel3 = NULL;
         }
         size_t index_l3 = 0;
+        if (vec_value.size() == 0) {
+            builder_level_1->get_widget("btnToL2AndLv3Image", map_menu_level_1[key]->btnToL2AndLv3Image);
+            map_menu_level_1[key]->btnToL2AndLv3Image->hide();
+        }
+        else {
+            builder_level_1->get_widget("btnToL2AndLv3Image", map_menu_level_1[key]->btnToL2AndLv3Image);
+        }
         for (string& str_level_3: vec_value) {
             auto builder_level_3 = Gtk::Builder::create_from_file(path_glade);
             map_menu_level_1[key]->vec_menu_level_3.push_back(new struct_menu_level_3);

source/menu_os.h

@@ -36,6 +36,7 @@ private:
         struct struct_menu_level1 {
             Gtk::Label *lblRevL1;
             Gtk::Button *btnToL2AndLv3;
+            Gtk::MenuButton* btnToL2AndLv3Image;
             Gtk::Revealer *revealer;
             Gtk::Box *boxLevel3;
             Gtk::Box *boxMenuLevel1;

ubl-settings-bootloader.css

@@ -153,8 +153,11 @@ opacity:0.99;
   background-color: @theme_bg_color;
 }
 
+.addbg_revealer * {
+  background-color: @theme_base_color;
+}
 .offset_revealer{
-  background-color: green;
+  border-width: 1px;
-  margin:0 2px 0 2px;
+  border-style: solid;
-  padding: 3px 10px 3px 5px;
+  border-color: @theme_text_color;
 }

ubl-settings-bootloader.glade

@@ -211,7 +211,7 @@
               </packing>
             </child>
             <child>
-              <object class="GtkMenuButton">
+              <object class="GtkMenuButton" id="btnToL2AndLv3Image">
                 <property name="visible">True</property>
                 <property name="can-focus">True</property>
                 <property name="focus-on-click">False</property>
@@ -1788,6 +1788,16 @@
     <property name="margin-top">10</property>
     <property name="margin-bottom">10</property>
     <property name="transition-type">slide-right</property>
+    <child>
+      <object class="GtkFrame">
+        <property name="visible">True</property>
+        <property name="can-focus">False</property>
+        <property name="label-xalign">0</property>
+        <property name="shadow-type">in</property>
+        <child>
+          <object class="GtkAlignment">
+            <property name="visible">True</property>
+            <property name="can-focus">False</property>
             <child>
               <object class="GtkBox" id="popoverMenuOS">
                 <property name="visible">True</property>
@@ -1887,9 +1897,19 @@
                 </child>
               </object>
             </child>
+          </object>
+        </child>
+        <child type="label_item">
+          <placeholder/>
+        </child>
+        <style>
+          <class name="offset_revealer"/>
+        </style>
+      </object>
+    </child>
     <style>
-      <class name="addbg"/>
       <class name="offset_revealer"/>
+      <class name="addbg_revealer"/>
     </style>
   </object>
   <object class="GtkWindow" id="wndAddEditData">