#gallery .tile .caption{left:0;opacity:0;display:block;position:absolute;top:0;height:100%;-webkit-transition:opacity .3s;-moz-transition:opacity .3s;-o-transition:opacity .3s;transition:opacity .3s;background:rgba(0,0,0,.4);width:100%}#gallery .tile:hover .caption{opacity:1}#gallery .tile:hover{cursor:pointer}