.event-photo-gallery {
  width: 100%;
  max-width: 1000px;
  margin: auto;
  overflow: hidden;
  position: relative;
}

.event-photo-gallery img {
  display: none;
}

.event-photo-gallery img.active {
  display: block;
  width: 100%;
  object-fit: contain!important;
  height: auto;
  overflow: hidden;
}