Update hover

uebung2/cssgalerie.html

@@ -11,11 +11,17 @@
                 -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
                 filter: grayscale(100%);
         }
+        img:hover {
+                filter: none;
+                -webkit-filter: none;
+        }
         .images {
   				-webkit-column-count: 3; /* Chrome, Safari, Opera */
   				-moz-column-count: 3; /* Firefox */
   				column-count: 3;
+                column-gap: 40px;
 		}
+
 </style>
 
 <div class="images">