html,
body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    background: url("bakim.jpeg") center center no-repeat;
    background-size: cover;
}

@media (min-width: 1600px) {
    body {
        background-size: 100% 108%;
    }
}