* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#img-top {
    width: 70%;
    margin: 15px auto;
}
.img-bottom {
    position: relative;
    width: 60%;
    height: auto;
    left: 25%;
}

header {
    width: 100%;
    margin: 5px auto;
    background-color: #607d8b;
}
.main-bloc {
    display: flex;
    flex-direction: column;
    margin-top: 3%;
    margin-left: auto;
    margin-right: auto;
    max-width: 1300px;
    max-height: auto    ;
    width: 95%;
    height: auto; 
    background: #607d8b;
   
}
.text-header {
    font-size: 28px;
    width: 80%;
    text-align: left;
    text-justify: inter-word;
    height: auto;
    margin: 5px auto;
    padding: 5px 5%;
    color: whitesmoke;
}
.card-bloc {
    display: flex;
    width: 95%;
    margin: 20px auto;
    padding: 15px;
    border-radius: 20px;
    box-shadow: 8px 8px 10px 3px rgb(69, 67, 67);
    background-color: #f1f1f1;
}
h3 {
    display: none;
}
img {
    width: 90%;
    margin: 5px;
}
video {
    width: 100%;
    height: auto;
    margin: 2px 2px 10px 0px;
}
.article {
    width: 75%;
    font-size: 23px;
    text-align: justify;
    text-justify: inter-word;
    margin: 15px 15px 10px 5px;
}
.article p {
    margin-top: 20px;
}
.gallerie {
    align-items: center;
    margin-top: 52px;
    width: 30%;
    margin-left: 3%;
    margin-right: 3%;
}
footer div {
    width: 95%;
    max-width: 1300px;
    margin: 0 auto;
    height: 25px;
    background-color: black;
}
/* *************************************************** */
@media screen and (max-width: 700px) {
    .card-bloc {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 95%;
        margin: 20px auto;
        padding: 15px;
        border-radius: 20px;
        box-shadow: 8px 8px 10px 3px rgb(69, 67, 67);
        background-color: #f1f1f1;
    }
    h2 {
        display: none;
    }
    h3 {
        display: inline;
    }
    .gallerie {
        display: flex;
        flex-direction: column;
        margin-top: 5%;
        width: 70%;
        margin-left: 3%;
        margin-right: 3%;
    }
    img {
        width: 98%;
        margin: 5px auto;
    }
    video {
        width: 100%;
        height: auto;
        margin: 5px auto;
    }
    .gallerie img:first-child {
        margin-top: 1%;
    }
    .article {
        margin-left: 14px;
    }
    .img-bottom {
        position: relative;
        width: 35%;
        left: 35%;
    }
    .text-header {
        font-size: 17px;
    }
    .article p {
        font-size: 16px;
    }
}