Wikipedia:Contents/gallery/styles.css

.wp-contents-cell {
    margin: 30px;
    text-align:center;
}
 .wp-contents-header {
    font-size:20px;
    text-align:center;
}
 .wp-contents-description {
    font-size:13px;
    text-align:center;
    width:300px;
}
 .wp-contents-title {
    background:#6475B7;
    color:white;
    font-size:20px;
    padding:5px;
    text-align:center;
}
 .wp-contents-table {
    width:100%;
    flex-wrap: wrap;
    display: flex;
    justify-content: space-around;
}
 .wp-contents-cell .mw-file-element {
    text-align:center;
    object-fit: cover;
    width: 17em;
    height: 10em;
}