change gallery margins

src/scheduler/templates/gallery.html

@@ -16,19 +16,19 @@
             display: flex;
             flex-wrap: wrap;
             justify-content: space-around;
-            margin: 20px;
+            margin: 0px;
         }
 
         .gallery-item {
             flex: 0 1 calc(33.3333% - 20px);
-            margin: 10px;
+            margin: 4px;
             overflow: hidden;
             position: relative;
             cursor: pointer;
         }
 
         .gallery-item img {
-            max-height: 420px;
+            max-height: 320px;
             width: 100%;
             height: auto;
             display: block;