body {
  font-family: sans-serif;
   margin: 0;
}

.masonry { /* Masonry container */
  -webkit-column-count: 4;
  -moz-column-count:4;
  column-count: 4;
  -webkit-column-gap: 1em;
  -moz-column-gap: 1em;
  column-gap: 1em;
  margin: 1.5em;
  padding: 0;
  -moz-column-gap: 1.5em;
  -webkit-column-gap: 1.5em;
  column-gap: 1.5em;
  font-size: .85em;
}
.item {
  display: inline-block;
  background: #fff;
  padding: 1em;
  margin: 0 0 1.5em;
  width: 100%;
	-webkit-transition:1s ease all;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-shadow: 2px 2px 4px 0 #ccc;
}
.item img{max-width:100%;}

@media only screen and (max-width: 320px) {
    .masonry {
      -moz-column-count: 1;
      -webkit-column-count: 1;
      column-count: 1;
    }
}

@media only screen and (min-width: 321px) and (max-width: 768px){
    .masonry {
        -moz-column-count: 2;
        -webkit-column-count: 2;
        column-count: 2;
    }
}
@media only screen and (min-width: 769px) and (max-width: 1200px){
    .masonry {
        -moz-column-count: 3;
        -webkit-column-count: 3;
        column-count: 3;
    }
}
@media only screen and (min-width: 1201px) {
    .masonry {
        -moz-column-count: 3;
        -webkit-column-count: 3;
        column-count: 3;
    }
}