.gallery {
  margin: 10px;
}

.gallery a {
  text-decoration: none;
}

.gallery img {
  border-radius: 4px;
  width: 100%;
  height: auto;
  padding: 5px;
  transition: .5s ease;
}

.gallery img:hover {
  transform: scale(1.05);
}

@media (max-width: 768px) {
  .gallery img {
    width: 100%;
    height: auto;
  }
}