#partenaires .cell img {
    max-width: 180px;
    margin: 0 0 30px 0;
    border-radius: var(--border-radius);
    filter: grayscale(1);
    transition: all .2s ease;
    opacity: 0.7;
}

#partenaires .cell img:hover {
    filter: grayscale(0);
    opacity: 1;
}