body{
    background-image: url('../img/background-guest.png'), var(--gradient_gelo);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;

    display: flex;
    justify-content: center;
    align-items: center;
}

main{
    display: flex;
    justify-content: center;
    align-items: center;
}