diff --git a/7-golden-sections/index.html b/7-golden-sections/index.html
index 8779894..309beb7 100755
--- a/7-golden-sections/index.html
+++ b/7-golden-sections/index.html
@@ -15,6 +15,11 @@
   <script src="../js/geometor.ui.js" defer></script>
   <script src="../js/geometor.svg.js" defer></script>
   <script src="./index.js" defer></script>
+  <style>
+    body {
+      overflow: hidden;
+    }
+  </style>
 
 </head>