body {
            text-align: center;
        }
        body, html {
            height: 100%;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
        }
        .contenu {
            flex: 1; /* Prend tout l'espace disponible */
            padding: 20px;
        }
        .who button {
            border-radius: 5px;
            background: rgb(255, 0, 47);
            color: white;
            border: none;
            padding: 15px;
            cursor: pointer;
            transition: border-radius 0.1s ease;
            font-size: 19px;
        }
        .who button:hover {
            border-radius: 3px;
        }
        footer {
            background: black;
            text-align: center;
            padding: 10px;
        }
        footer a {
            text-decoration: none;
            font-size: 17px;
            color: white;
            margin: 0 10px;
        }
        footer a:hover {
            text-decoration: underline;
        }