save file

Author: javascript-2020

code/nodejs/servers/file-server/readme.md

@@ -1,6 +1,11 @@
 
 
-# file-server.js
+<h1 style='display:flex'>
+      file-server.js
+      <div style='flex:1'></div>
+      <input type=button value=download onclick='btn.download()'>
+</h1>
+
 
 ## Description