#mensagem {
    background-color: #669900;
    text-align: left;
    padding: 10px;
    margin: 10px;
    margin-bottom: -10px;
}

#mensagem h1 {
    font-size: large;
    text-align: center;
    margin-top: -5px;
    margin-bottom: -5px;
}

#mensagem p {
    font-size: small;
    text-align: justify;
    margin-top: 13px;
    margin-bottom: -5px;
}

#assinatura p {
    font-size: small;
    text-align: right;
    margin-top: 0px;
    margin-bottom: 0px;
}