diff --git a/0001-intro/index.html b/0001-intro/index.html
index 3060577..e91604b 100644
--- a/0001-intro/index.html
+++ b/0001-intro/index.html
@@ -147,6 +147,7 @@
 			// - https://revealjs.com/config/
 			Reveal.initialize({
 				hash: true,
+        slideNumber: 'c/t',
 
 				// Learn about plugins: https://revealjs.com/plugins/
 				plugins: [ RevealMarkdown, RevealHighlight, RevealNotes ]