diff --git a/index.html b/index.html
index 79fd1de..e0d1ec6 100644
--- a/index.html
+++ b/index.html
@@ -17,6 +17,7 @@
             </span>
         </div>
         <div class="navigation-buttons">
+            <!-- TODO: make these anchor tags with href https://www.youtube.com/watch?v=nwGY-9lwTF4 -->
             <button id='button-home' class="button-default button-selected">home</button>
             <button id='button-blog' class="button-default">blog</button>
             <button id='button-file-server' class="button-default">file server</button>