body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    text-align: center;
    margin-top: 50px;
}

.container {
    width: 300px;
    margin: auto;
}

button {
    padding: 10px 20px;
    margin: 10px;
    font-size: 16px;
}

pre {
    background-color: #fff;
    padding: 20px;
    border: 1px solid #ddd;
    text-align: left;
    max-height: 300px;
    overflow-y: scroll;
    margin-top: 20px;
}

#resultado {
    white-space: pre-wrap;
    word-wrap: break-word;
}