.gallery-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin: 1em -2rem;
}
.gallery-thumb {
  margin: 11px;
  padding: 0;
  font-size: 0;
  position: relative;
}
.gallery-thumb img {
  box-sizing: content-box;
  width: 150px;
  height: 150px;
  background: #fff;
  padding: 8px;
  padding-bottom: 28px;
  box-shadow: 1px 1px 4px rgba(0,0,0,0.2);
  border-radius: 2px;
}
.gallery-zoom-ready .gallery-thumb:hover:after {
  content: '';
  background-image: url("../images/zoom_in.svg");
  background-repeat: no-repeat;
  background-size: 100% 100%;
  position: absolute;
  top: 50%;
  left: 50%;
  height: 48px;
  width: 48px;
  margin-left: -24px;
  margin-top: -34px;
  opacity: 0.9;
}
@media (max-width: 600px) {
  .gallery-thumb {
    margin: 6px;
  }
}