.section-banniere img{
    width: 100%;
    height: auto;
    display: block;
    
}


.section-nav {
    background-color: #3FAD9C;
}

.presentation {
    display: flex;
    align-items: center;
}

.section-nav img {
    width: 55%;
}

.section-nav .desc{
    padding-left: 7%;
    padding-right: 7%;
}

.section-nav .desc h2{
    text-align: center;
    margin-bottom: 20px;
    font-size: 2.5em;
    font-weight: bold;
}

.section-nav .desc p{
    font-size: 1.4em;
    text-align: justify;
}

.section-nav .desc a{
    text-decoration: none;
    color: #000000;
    font-style: italic;
    font-weight: bold;
}

@media all and (max-width: 860px) {
    .presentation{
        flex-direction: column-reverse;
    }

    .section-nav img{
        width: 100%;
        max-width: 100%;
    }
}