Adding a Background image to sidemenu app

Hello,

i created an app uising the sidemenu-template that i would like to style now.
One important thing would be to have a static background image underneath all the elements ( including the sidemenu, header, etc.
How can I achieve that?
Thanks a lot!

I think it is worked for you

.menu-inner > ion-header, .menu-inner > ion-content, .menu-inner > ion-footer {
position: absolute;
background-image: url(https://www.w3schools.com/css/trolltunga.jpg) ;
}
#menu .item-md {
background-color: transparent;

}

thanks,
but that does not work really.
it only creates a background under the menu part of the app…