#loginpage:before, #logoutpage:before, #loginopenwindowpage:before, #changepasswordpage:before, #samldiscoverypage:before, #samlauthenticationfailurepage:before {
    display: block;
    content: " ";
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: -1;
    background-image: url("mischwald.jpg");
    background-repeat: no-repeat;
    background-position: 50% 50%;
    background-size: cover;
}