article img {
    width: auto;
    max-width: 100%;
    height: auto;
    display:block;
    margin-left: auto;
    margin-right: auto;
    box-shadow: #A1A1A1 3px 3px 3px;
    margin-top: 1em;
    margin-bottom: 1em;
    
}

.card-img-top {
    width: 100%;
    height: 11vw;
    object-fit: cover;
}