#response {
    white-space: pre-wrap;
}

#response.writing::after {
    content: " █";
    color: grey;
    font-weight: bold;
}

#response::before {
    content: "Réponse :\A";
    color: grey;
    font-weight: bold;
}

#response[aria-busy="true"]::before {
    content: "";
}