.row.image_row{
  position: relative;
  padding-right: 33.33333333%!important;
}

.row.image_row .image_group{
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
}

.row.image_row .image_viewer{
  display: block;
  position: absolute;
  left: 0;
  right: 15px;
  top: 0;
  bottom: 0;

  border: 1px solid #ccc;
  border-radius: 6px;

  background-color: #f5f5f5;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.row.image_row .image_viewer .image_holder{
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  margin-top: -10px;

  height: 20px;
  line-height: 20px;
  text-align: center;

  color: #777;
  font-size: 80%;
  font-weight: bold;
}

.row.image_row .image_viewer.loaded .image_holder{
  display: none;
}

.row.image_row .image_viewer .image_loading{
  display: none;
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -30px;
  margin-top: -30px;

  width: 60px;
  height: 60px;
}

.row.image_row .image_viewer .image_loading.active{
  display: block;
}