.spip-colonnes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
    gap: 1.5rem;
    align-items: start;
    margin: 1.5rem 0;
}

.spip-colonne {
    min-width: 0;
    box-sizing: border-box;
}

.spip-colonne img,
.spip-colonne video,
.spip-colonne iframe,
.spip-colonne table {
    max-width: 100%;
}

.spip-colonne img,
.spip-colonne video {
    height: auto;
}

@media (max-width: 640px) {
    .spip-colonnes {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}