How to change background color of side menu in ionic4

#1

I want to change background color of the side menu I apply background color to ion-content which is inside menu but it not works

#2

im my menu is like that: in the global CSS

ion-split-pane{ 
    --border: none !important;
    ion-menu{
     --background: var(--ion-color-primary) !important; 
        ion-content{            
            --background: var(--ion-color-primary) !important; 
            ion-list-header{ 
                --background: var(--ion-color-primary) !important;
                --color: #FFFFFF !important;   
            }
            ion-item{
                --background: var(--ion-color-primary) !important;
                 --color: #FFFFFF !important;
                 ion-icon{ padding-right: 10px !important; }
            }
        }
    }
}
#3

thnx for reply it works for me