.main-component-banner {
    display: none;
}

/* 
    ::ng-deep is needed because .authenticated doesn't belong to main.component, its in the <body> tag 
    ViewEncapsulation prevented this to work. By using ::ng-deep, Angular is forced to evaluate this OUTSIDE 
    ViewEncapsulation
*/
::ng-deep .authenticated .main-component-banner {
    display: block;
}