diff --git a/assignments/guestbook.html b/assignments/guestbook.html
index ad201d1..8bf2f6b 100644
--- a/assignments/guestbook.html
+++ b/assignments/guestbook.html
@@ -198,7 +198,7 @@
 </div>
 <h1 id="guestbook">Guestbook</h1>
 <p>Students, add something interesting below and submit a pull request. It might be a (school appropriate) picture, quote, or other message. Be creative!</p>
-
+<div style='position:relative; padding-bottom:calc(116.50% + 44px)'><iframe src='https://gfycat.com/ifr/FancyWigglyGrayreefshark' frameborder='0' scrolling='no' width='100%' height='100%' style='position:absolute;top:0;left:0;' allowfullscreen></iframe></div>
 <div id="after">
     <a href="#">Back to top</a>
     <div id="after-links">