diff --git a/index.html b/index.html
index 994c30d..a2ce8a2 100644
--- a/index.html
+++ b/index.html
@@ -411,6 +411,11 @@ class webserver {
   });
 
   Reveal.initialize({
+    width: 1280,
+    height: 720,
+    margin: 0.08,
+    minScale: 0.2,
+    maxScale: 2.0,
     hash: true,
     slideNumber: 'c/t',
     transition: 'slide',