.masonry-grid{width:100%;margin:0 auto}.gallery-item{width:calc(33.333% - 11px);margin-bottom:16px}@media (max-width:768px){.gallery-item{width:calc(50% - 8px);margin-bottom:16px}}@media (max-width:480px){.gallery-item{width:100%;margin-bottom:16px}}.gallery-item img{display:block;width:100%;height:auto}