html, body {
    height: 100%;
}

body {
    margin: 0;
    background-image: url("/Content/Images/Klekoon (blanc).png"), url("/Content/Images/login-background.png");
    background-position: center 40px, center center;
    background-repeat: no-repeat, no-repeat;
    background-attachment: fixed, fixed;
    background-size: 260px auto, cover;
    overflow-x: hidden;
}