.gallery{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-gap: 10px;
  align-items: stretch;
  padding: 10px;
}

.item{
max-width: 100%;
height: auto;
transition: all 0.5s ease;
}

.item:hover{
  transform: scale(1.1);
}