*{padding:0;margin:0}		

.mtlsr-lightbox{display:none;position:fixed;width:80%;height:100%;z-index:9999;top:0;}
.mtlsr-lightbox .image-in-lightbox{max-width:500px;width:100%;position:absolute;z-index:999;top:10%; margin-left: auto;margin-right: auto;left: 0;right: 0;}

.close, .next, .prev{position:absolute;z-index:9999;}
.close{position:absolute;right:20px;top:20px}
.next, .prev{top:50%}
.next{right:20px;}
.prev{left:20px;}