diff --git a/Zoom.css b/Zoom.css
index 886693d..4dfa789 100644
--- a/Zoom.css
+++ b/Zoom.css
@@ -10,7 +10,7 @@
     }
 p{font-size:150%;}
 h3:before {
-    content: counter(chapter) "." counter(section);
+    content: counter(number) "." counter(section);
 }
 h3 {
     counter-increment: section;