'//' is not a CSS comment.

I got the warning:
	Expected declaration but found ‘/’.  Skipped to next declaration.

proxy/static/snowflake.html

@@ -61,7 +61,7 @@
     right: 0; top: 0;  height: 100%; width: 10%;
     background-color: #202; color: #f8f;
     font-variant: small-caps; font-size: 100%;
-    border: none; // box-shadow: 0 2px 5px #000;
+    border: none; /* box-shadow: 0 2px 5px #000; */
   }
   #send:hover { background-color: #636; }
   #status {