.ohp-popup {
  transition: opacity 0.15s ease;
}
#product [id^="input-option"] img.img-thumbnail {
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
#product [id^="input-option"] img.img-thumbnail:hover {
  box-shadow: 0 0 0 2px #337ab7;
  transform: scale(1.08);
}