.header-on #main-menu > li ul {
    background-color: rgba(23, 23, 23, 0.85);
    -webkit-box-shadow: none;
    box-shadow: none; 
}
   
.header-on #main-menu .has-submenu::after {   
    color: #fff;
} 

.header-on .login a {
    color: #fff;
}