.slider_famille{
    background-image: url('../charte/slide_header.jpg');
    height: 369px;
    background-size: 100% 100%;
}
.vignette-slider-famille{
    padding-top: 10px;
    max-width: 320px;
    max-height: 305px;
    margin-top: -19px;
}
@media screen and (max-width: 767px) {
    .vignette-slider-famille{
        max-width: 255px;
    }
}