#guida-bonus-form {
    max-width: 600px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 10px;
}
.step {
    display: none;
}
.step.active {
    display: block;
}
#guida-bonus-form h3 {
    margin-bottom: 10px;
}
#guida-bonus-form select {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
}
#guida-bonus-form button {
    padding: 10px 15px;
    margin-right: 10px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 5px;
}
#risultato_bonus {
    margin-top: 20px;
    font-weight: bold;
}