.card-livres {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    justify-content:space-between;
    gap:1rem;

}

.card-livre {
    width:20%;
    padding:1rem;
    border-radius:1rem;
    box-shadow:0 4px 8px rgba(0,0,0,0.2)
}

.card-livre__image-couverture {
    width:100%;
    border-radius:1rem;
}