.html,body{
     /* Para que funcione correctamente en Smartphones y Tablets */
     height:100vh;
}

body {
    background-image: url("../../img/stand/Stand 1_Savon Naturel.jpg")!important;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}