.lettera-amia{
    padding:40px 20px;
}

.box-lettera{
    max-width:1000px;
    margin:0 auto;
    background:#fff;
    border:1px solid #bfd8cf;
    border-radius:30px;
    padding:40px 35px;
}

.logo-amia{
    text-align:center;
    margin-bottom:30px;
}

.logo-amia img{
    max-width:220px;
}

.contenuto-lettera{
    display:flex;
    gap:40px;
}

.colonna{
    width:50%;
}

.colonna p{
    font-size:17px;
    line-height:1.7;
    color:#333;
    text-align:justify;
    margin-bottom:18px;
}

.colonna strong{
    font-weight:700;
}

.testo-evidenza{
    font-style:italic;
    font-weight:600;
}

.firma{
    text-align:right;
    margin-top:40px;
}

.firma p{
    font-size:14px;
    line-height:1.5;
    text-transform:uppercase;
    margin-bottom:20px;
}

.firma span{
    display:block;
    color:#008257;
    font-size:20px;
    font-weight:600;
}

.firma strong{
    display:block;
    color:#008257;
    font-size:38px;
    line-height:1;
}

@media (max-width:768px){

    .contenuto-lettera{
        flex-direction:column;
    }

    .colonna{
        width:100%;
    }

    .colonna p{
        font-size:15px;
    }

    .firma{
        text-align:center;
    }

    .firma strong{
        font-size:30px;
    }
}