diff --git a/content/batch/learn/css/basic.mdx b/content/batch/learn/css/basic.mdx
index b35a688..bc6a15d 100644
--- a/content/batch/learn/css/basic.mdx
+++ b/content/batch/learn/css/basic.mdx
@@ -182,6 +182,7 @@ body {
 
 /* Background image */
 .container {
+  /* you can use any image format like jpg, jpeg, png, SVG*/
   background-image: url(bg.jpg);
 }