.row { width:420px; 
  margin: 30px auto;
}

ul { list-style: none;
  margin: 0; padding: 0;}

ul li { display: inline-block;}

#lightbox { width: 100%; height: 100%;
background-color: rgba(0, 0, 0, 0.694);
top:0%; left: 0%; position: fixed;
display: none;
}

#lightboxImage { 
  position: absolute;
  top:50%; left:50%; 
  transform: translate(-50%,-50%);
  border: 3px solid #eee;
}