.formulaire{
    display: flex;
    flex-direction: column;
    width: 30vw;
    margin-left: auto;
    margin-right: auto;
    background-color: rgb(245, 245, 245);
}
h3{
    width: 30vw;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}
.hidden{
    visibility: hidden;
    height: 0;
}
.visible{
    height: 100%;
    visibility: visible;
}
label[for="message_messageInfos_1"], label[for="message_messageInfos_2"],
label[for="message_messageInfos_3"],label[for="message_messageInfos_4"],
label[for="message_messageInfos_5"],label[for="message_messageInfos_6"],
label[for="message_messageInfos_7"],label[for="message_messageInfos_8"],
label[for="message_messageInfos_9"],label[for="message_messageInfos_10"],
label[for="message_messageInfos_11"]{
    width: 29vw;
}
textarea{
    width: 30vw;
}
button[type="submit"]{
    margin-top: 3vh;
    margin-left: 25.5vw;
}