#blockgallery-gallery{
  column-count:4;
  column-gap:20px;
  -webkit-user-select: none; /* Safari */
  -ms-user-select: none; /* IE 10 and IE 11 */
  user-select: none; /* Standard syntax */
}
    
#blockgallery-gallery img {
  width:100%;
  height:auto;
  margin: 4% auto;
  box-shadow:-3px 5px 15px #000;
  cursor: pointer;
  transition: all 0.2s;
}
@media (max-width:1200px){
  #blockgallery-gallery{
  column-count:3;
  column-gap:20px;
  -webkit-user-select: none; /* Safari */
  -ms-user-select: none; /* IE 10 and IE 11 */
  user-select: none; /* Standard syntax */
}
}
@media (max-width:800px){
  #blockgallery-gallery{
  column-count:2;
  column-gap:20px;
}
}
@media (max-width:600px){
  #blockgallery-gallery{
  column-count:1;
}
}