Menu bar submenu caption and indicator

HI i am using vaadin 7.6.5 and created sample for Menubar with custom style.
but i am not able to set style for submenu items

here is my css code and vaadin code and screen shot of the same

@mixin main_nav {

.navbar {

   .v-menubar{
   
        height: 40px;
        border: none;
         
       .v-menubar-menuitem-menu-normal {

            color: blue;
            background: red;
            width: 110px;
            font-weight: 300;
            font-size: 11px;
            border-right: solid 1px #725300;
            border-left: solid 1px #725300;
            text-transform: uppercase;
        
            &:hover {
                background: #725300;
                &:after {
                    color: #725300;
                }
            }
        
        }/*menu-normal close*/
        
        .v-menubar-menuitem-menu-clicked {

            color: #a47700;
            background: #725300;
            width: 110px;
            border-right: solid 1px #725300;
            border-left: solid 1px #725300;
            font-weight: 300;
            font-size: 11px;
            text-transform: uppercase;
            padding-top: 25px;
            
            &:hover {
                background: #725300;
                &:after {
                    color: #725300;
                }

            }
        
        }/*menu-clicked close*/
        
        .v-menubar-menuitem-selected {
           background: yellow;
        }
                 
     }/*v-menubar close*/
    
                
    .v-menubar-submenu{
        .v-menubar-menuitem-caption{
            font-size: 11px;
            color: red;
        }
    }                        

}/*navBar close */

}

and the code to apply css is below

     setStyleName("navbar");
    MenuBar main = new MenuBar();
    main.setStyleName("v-menubar");
    main.setAutoOpen(true);
    
    MenuItem menu1 = main.addItem("Menu1", mycommand);
    menu1.setStyleName("menu-normal");
    
    MenuItem menu11=menu1.addItem("Menu11", mycommand);
    MenuItem menu111=menu11.addItem("Menu111", mycommand);
    
    MenuItem menu2 = main.addItem("Menu2", mycommand);
    menu2.setStyleName("menu-normal");
    MenuItem menu3 = main.addItem("Menu3", mycommand);
    menu3.setStyleName("menu-normal");

Thanks
Nagaraj RC
29534.png