.gabarit-visuel--container {
    height: 300px;
    width: 100%;
}

@media screen and (min-width: 768px) {
    .gabarit-visuel--container {
        height: 640px;
    }
}

.gabarit-visuel--container img {
    object-fit: cover;
    height: 100%;
    width: 100%;
}