.gallery {
  margin: 10px 50px;
}

.gallery img {
  transition: 1s;
  padding: 15px;
  width: 220px;
}
.gallery img:hover {
  filter: grayscale(100%);
  transform: scale(1.3);
}
.gallery1 img {
  transition: 1s;
  padding: 15px;
  width: 500px;
}
.gallery1 img:hover {
  filter: grayscale(100%);
  transform: scale(1.1);
}