body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
    background-color: #f2f2f2;
}

#forca {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    display: inline-block;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

#entrada {
    font-size: 20px;
    text-align: center;
    width: 40px;
}

button {
    margin-top: 10px;
    padding: 8px 16px;
}