.bg-login-image {
    /*    background: url("https://source.unsplash.com/K4mSJ7kc0As/600x800");*/
    background: url("img/login_image_sena2.jpg") top center repeat-y;;
    background-size: 100%;    
    -moz-background-size: 100%;  
    -o-background-size: 100%;   
    -webkit-background-size: 100%;  
    -khtml-background-size: 100%;  
}
.bg-register-image {
    background: url("img/register-image.jpg");
    background-position: center;
    background-size: cover;
}

.bg-password-image {
    background: url("img/password-image.jpg");
    background-position: center;
    background-size: cover;
}