.newsletter-box{
    max-width:1000px;
    margin:60px auto;
    padding:35px;
    background:#ecfdf5;
    border:1px solid #86efac;
    border-radius:20px;
    text-align:center;
}

.newsletter-box h2{
    color:#166534;
    margin-bottom:15px;
}

.newsletter-box input{
    width:100%;
    max-width:420px;
    padding:15px;
    border:1px solid #d1d5db;
    border-radius:10px;
    font-size:16px;
    margin-top:15px;
}

.newsletter-box button{
    display:block;
    margin:18px auto 0;
    background:#16a34a;
    color:white;
    border:none;
    padding:15px 24px;
    border-radius:12px;
    font-weight:bold;
    cursor:pointer;
}

#messaggio_newsletter{
    margin-top:15px;
    font-weight:bold;
    color:#166534;
}