Adding a Gallery to the docs

docs/_static/docs.css

@@ -17,6 +17,12 @@ p {
     margin-bottom: 10px;
 }
 
+#gallery img {
+    border: 1px solid gray;
+    box-shadow: 5px 5px 5px #888888;
+    margin: 10px;
+}
+
 .carousel img {
   max-height: 500px;
 }