#background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("https://lh3.googleusercontent.com/pw/AP1GczP5ESNVyb-IQSt8Iv8dCmZN55nexl_MKu9d-WRolH9jCcCKixl842OArYaT5Y5FhHoek-24Fd6HQ59lJoHfJV-CsAUf2TqIpgRcf-TElWRM08PMRoqLgeGxtlSAl5MB1qfBdtG-SwUBnnxryM8x9o5r=w1737-h977-s-no-gm?authuser=6");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -1; /* Posiziona lo sfondo dietro il contenuto */
    }

#header{
       width: auto; /* Larghezza del div */
       height: 250px; /* Altezza del div */
       background-image: url("https://lh3.googleusercontent.com/pw/AP1GczPVtLb7yN_UmO74uJ1frbVBo7h-bJvtYB0eefrYya1OU0SN6qykm6p6sMKs9UE8tbQ0h5rxSrOyQyd5NSmL6qo_uxDyqE0QqQZt2eVU3jBsJW0n462QifBhCcryZfVl8NnX08lkV7uPeL8O-H4VPadU=w1500-h500-s-no-gm?authuser=6"); /* URL dell'immagine */
       background-size: cover; /* Adatta l'immagine al div */
       background-position: center; /* Centra l'immagine */
       background-repeat: no-repeat; /* Non ripetere l'immagine */
       }