center-thumbnails

code:style.css

.grid li.page-list-item a .icon {

position: relative;

padding: 0;

margin: auto;

}

.grid li.page-list-item a .icon img {

display: table-cell;

width: auto;

max-height: 100px;

max-width: 90%;

vertical-align: middle;

border-radius: 3px;

}