@media screen and (max-width:320px){
    header.header h1 {
        text-align: center;
    }
}

@media screen and (max-width:463px){
    nav .onglets a {
    text-decoration: none;
    color: black;
    margin: 10px;
    border-bottom: none;
    }
}

@media screen and (max-width:680px){
    nav .onglets {
        margin-left: 0px;
        margin-bottom: 20px;
    }
}

@media screen and (max-width:763px){
    nav .onglets {
        margin-left: 0px;
        margin-bottom: 0px;
    }
}


@keyframes fadeIn {
    from {
            opacity: 0;
            transform: scale(0.95);
    }
    to {
            opacity: 1;
            transform: scale(1);
    }
}

@media (max-width: 600px) {
    iframe {
            height: 200px;
    }

        .button-container {
            flex-direction: column;
            gap: 20px;
    }

    button {
            width: 80%;
    }
}