.cards {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
}
 
.card-item {
    flex: 0 0 25rem;
    box-sizing: border-box;
    margin: 1rem 0.25rem;
    border-radius: 10px;
    border: 1px solid #ccc;
}

.card-image {
    border-radius: 10px;
}