/* Style général */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
    text-align: center;
}

/* En-tête */
header {
    background-color: #4CAF50;
    color: white;
    padding: 20px;
}

/* Bouton */
button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-top: 20px;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #45a049;
}

/* Pied de page */
footer {
    margin-top: 30px;
    padding: 10px;
    background-color: #222;
    color: white;
}