diff --git a/book/intro/book.md b/book/intro/book.md
index d424542..5362c35 100644
--- a/book/intro/book.md
+++ b/book/intro/book.md
@@ -2,17 +2,7 @@
 
 Never seen a TeachBook before? Here's a small demo of our MUDE-book!
 
-<div style="display: flex; justify-content: center;">
-    <div style="position: relative; width: 100%; height: 1000%; padding-bottom: 50%;">
-        <iframe
-            src="https://www.youtube.com/embed/gbBsWo6em4c?si=gmQex2p-LkHM_pCZ"
-            style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"
-            frameborder="0"
-            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
-            allowfullscreen
-        ></iframe>
-    </div>
-</div>
+<iframe width="100%" src="https://www.youtube.com/embed/gbBsWo6em4c?si=ayKhISsx06LmGbDD" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 
 So what are you looking at? It's a website generated with the [Jupyter Book package](https://jupyterbook.org/). Various extensions have been added to improve the student-experience, especially for technical topics!