body {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    margin: 50px;
}

button {
    display: block;
    margin: 10px auto;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

#resultado {
    margin-top: 20px;
    padding: 10px;
    border: 1px solid #000;
    min-height: 50px;
    display: inline-block;
    width: 50%;
    background-color: #f4f4f4;
}