.gallery__list {
  list-style-type: none;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}
.gallery__item {
  /*width: calc(95% / 4);*/
}
.gallery__item:not(:nth-child(-n+4)) {
  margin-top: 20px;
}
.gallery__item img {
  width: 100%;
  height: auto;
}
.gallery__item a {
  transition: .5s;
}
.gallery__item a:hover {
  filter: opacity(0.7);
}
.gallery__item a:hover img {
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.15);
}

.cls_thumbnail {
  object-fit: cover;
  width: 300px !important;
  height: 300px !important;
}