diff --git a/css/main.css b/css/main.css
index 16fae2426a614f6035b323d65dca8f72d9e4767e..ba33137348217a13dc32abe5c7733b2bb7818965 100644
--- a/css/main.css
+++ b/css/main.css
@@ -1,3 +1,4 @@
+@charset "UTF-8";
 /**
  * Main styles for reveal.js 
  *