#background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("https://lh3.googleusercontent.com/pw/AP1GczO6Ktgaem5o5w2zdyTqiA2gv22igJAWrqL_GwJZd1QcLera5Y-oiiRGs1fbpWcXYJBBGMIDWJiFJC7RWiBYylUa2myctIzkdRlKZxx_wK9Nny65FMXn99TJ4M28HqfF3LrcVuBPX3Na_8m7iTZfwACM=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/AP1GczPUgAiYNx70upKgkPi3it5xYznDnu8tQ7PrIEpCG-os4U_h3tROChJg-0kOF0u76C2_n1NB4h-LAHSKuTkOGeEGOiyPMhOV8NbOeZENYJ0mfNfaR0V69XRbrQ2epttCDx2qa6yk02qPrxbvKAjYHaHC=w1280-h512-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 */
       }