.tx-spmgallery-pi1 ul.thumbnailList {
  list-style-type: none;
  list-style-position: outside;
  padding: 0;
  margin: 0 -10px 0 0; /* right margin = -padding-right of .thumbnailList li */
}
.tx-spmgallery-pi1 .thumbnailList li {
  float: left;
  list-style-type: none;
  list-style-position: outside;
  margin: 0;
  padding: 0 10px 10px 0;
  text-indent: 0;
}
.tx-spmgallery-pi1 .thumbnailList li img {
  opacity: 0.8;
}
.tx-spmgallery-pi1 .thumbnailList li.active img,
.tx-spmgallery-pi1 .thumbnailList li a:hover img {
  opacity: 1;
}