.body {
    font-family: 'Roboto', sans-serif;
    background-image: linear-gradient(rgba(51, 51, 51, 0.7), rgba(51, 51, 51, 0.7)), url('images/sfondo.jpg');
    background-attachment: fixed;
    background-size: cover;
    background-color: #333;
    color: #fff;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.contact-form {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    background-color: #444; /* Colore opaco per il contenitore */
}
.contact-form h2 {
    text-align: center;
}
.contact-form label {
    display: block;
    margin: 15px 0 5px;
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}
.contact-form textarea {
    resize: vertical;
}
.contact-form input[type="checkbox"] {
    margin-top: 10px;
}
.contact-form button {
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}
.contact-form button:disabled {
    background-color: #ccc;
}
.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.popup-content {
    background-color: #333;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    color: #fff;
    width: 300px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.popup-content p {
    margin: 0 0 15px;
}
#close-popup {
    background-color: #28a745;
    color: #fff;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}