.custom-image {
    width:200px;
    height:250px;
}

@media (max-width:768px ) {
    .img-milieu {
        display: block;
        margin: 0 auto;
        width:300px;
        height:300px;
    }
}


@media (max-width:768px) {
    .text-center-small {
        text-align:center;
    }
}