.gallery {
  line-height: 0;       
    -webkit-column-count: 3;    
    -webkit-column-gap: 0px;    
    -moz-column-count: 3;
    -moz-column-gap: 0px;
     column-count: 3;    
     column-gap: 20px;
  display:inline-block;    
   margin-right: auto;    
   margin-left: auto; 
}

.gallery-item {
  width: 100% !important;    
  height: auto !important;
}

.gallery img {
  width: 100% !important;    
  height: auto !important;
  transition: transform 0.3s ease;
}

.gallery img:hover {
  transform: scale(1.1);
}

.gallery figcaption {
  position: relative;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  width: 100%;
  text-align: center;
  padding: 0.5em;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-item:hover figcaption {
  opacity: 1;
}

@media (max-width: 1000px) {
   #images-wrapper {
   -moz-column-count:    2;
   -webkit-column-count: 2;
   column-count:         2;
   }
  }  
@media (max-width: 750px) {
   #images-wrapper {
   -moz-column-count:    1;
   -webkit-column-count: 1;
   column-count:         1;
   }
  }