.masonry { /* Masonry container */
    -webkit-column-count: 3;
    -moz-column-count:3;
    column-count: 3;
    -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;
    margin: 0 0 1.5em;
    width: 100%;
    transition: .5s ease-out all;
    box-sizing: border-box;
    box-shadow: 2px 2px 4px 0 rgba(0, 0, 0, .5);
    position: relative;
    text-align: center;
    color: white;
    line-height: 0;
}
.item:hover {
    box-shadow: 2px 2px 6px 0 rgba(0, 0, 0, .2);
    transform: scale(1.05) translateY(-1.5%);
}
.item img{
    max-width:100%;
}

.caption {
    position: absolute;
    top: 16px;
    left: 10px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, .5);
}

@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) {
    .masonry {
        -moz-column-count: 3;
        -webkit-column-count: 3;
        column-count: 3;
    }
}