/* clearfix because of floats */
.containerrg:before, .containerrg:after {content:"";display:table;}
.containerrg:after {clear:both;}

.item {float:left;margin:0 4px 4px 0;padding:0 0 12px 0;}
.item img {max-width:100%;max-height:100%;vertical-align:bottom;/*min-width:90px;min-height:90px;*/}

.first-item {clear:both;}
/* remove margin bottom on last row */
.last-row, .last-row ~ .item {margin-bottom:0;}