.image-gallery {
  display: flex;
  width: 100%;
  flex-wrap: wrap;
  margin-bottom: -2px;
}
.image-gallery__image-container {
  width: calc(100% / 6);
}
.image-gallery__image {
  width: 100%;
}
@media only screen and (max-width: 450px) {
  .image-gallery__image-container {
    width: calc(100% / 3);
  }
}