Reply To: Codes do not work

@chochonet: Hello there,
Go to => Appearance => Customize => Additional CSS and add the following CSS Code.

#menu-toggle, .main-navigation a {
    background-color: #f23456;
}
.sub-menu li a {
    background: #3380ff;
}

Let me know if this works out!
Kind Regards,
Skandha