body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 30px;
}

.configuratore {
    max-width: 700px;
    margin: auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    text-align: center;
}

h2 {
    margin-bottom: 20px;
}

select {
    padding: 12px;
    font-size: 16px;
    width: 100%;
    max-width: 400px;
}

.preview {
    margin-top: 30px;
}

.preview img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    padding: 10px;
    display: none;
}