body {
    font-family: Arial, sans-serif;
    background-color: #1E90FF; /* Bleu roi */
    color: white;
    text-align: center;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 10px;
}

.indice {
    margin: 20px 0;
}

button {
    background-color: #4CAF50; /* Vert */
    color: white;
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
}