.Gl {width:250px;float:left;margin:10px;}
.GaleriListe{background:#ccc;margin:4px;border:1px solid #eee;}
.GaleriListe img {opacity:1;transition:all 0.7s ease-in-out;}
.GaleriListe:hover img{opacity:0.7;transition:all 0.7s ease-in-out;}