.duas-container {
    max-width: 700px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    background: #fff;
}

.duas-container h2,
.duas-container h3 {
    margin-top: 0;
}

.duas-error {
    padding: 10px;
    margin-bottom: 15px;
    background: #ffefef;
    border: 1px solid #e00;
    color: #900;
}

.duas-success {
    padding: 10px;
    margin-bottom: 15px;
    background: #e8ffef;
    border: 1px solid #0a0;
    color: #060;
}

.duas-table {
    width: 100%;
    border-collapse: collapse;
}

.duas-table th,
.duas-table td {
    border: 1px solid #ddd;
    padding: 6px 8px;
    font-size: 13px;
}