.gal-item {
    float: left;
    padding: 5px;
    border: 1px solid #d4d4d4;
    margin: 4px;
    opacity: 0.8;
    box-shadow: 0 .5px 3px rgba(0, 0, 0, .37);
    border-radius: 5px;    
}

.gal-item:hover {
    opacity: 1.0;
}