.gal {	
	-webkit-column-count: 3; /* Chrome, Safari, Opera */
    -moz-column-count: 3; /* Firefox */
    column-count: 3;	
	}	
	
    
.gal img{ width: 100%; padding: 7px 0;}

@media (max-width: 500px) {		
		.gal {	
	        -webkit-column-count: 1; /* Chrome, Safari, Opera */
            -moz-column-count: 1; /* Firefox */
            column-count: 1;
	
	}
		
}