html,
* { box-sizing: border-box; 
}
body 
{ background: #fff;  
}
.galler {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.galler img {
  width: 100%;
  padding: 0px;
  /*box-shadow: #000000 0px 5px 18px -5px;
  border: 1px solid #fff;*/
  
  background: #fff;
  object-fit: contain;
  position: relative;
}
@media only screen and (max-width: 1200px) {
  .galler {
    grid-template-columns: repeat(3, 1fr);
	margin:0 30px;
  }
}
@media only screen and (max-width: 500px) {
  .galler{
    grid-template-columns: repeat(1, 1fr);
  }
}
.galler img:hover {
  z-index: 9;
  transform: scale(1.03);
  /* linear | ease | ease-in | ease-out | ease-in-out */
  transition: transform ease 0.5s;
}