html,
body,
header,
#intro {
    height: 100%;
}

#intro {
    background: url("shoting.jpeg")no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
#bgkontak {
    height: 100%;
}
#bgkontak {
    background: url("kontak.jpg")no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}