div.imageTileThumbnail img {
    width: 20% !important;
    float: left !important;
    margin: 10px !important;
    border: 1px solid #C3C3C3 !important;
}
div.imageTileThumbnail.thumbnailSelected img {
    border: 1px solid #000000 !important;
}
img .imageTileThumbnail:hover {
    cursor: pointer !important;
}