diff --git a/apps/editor/src/css/contents.css b/apps/editor/src/css/contents.css
index c5c53dc628..38a812a5bc 100644
--- a/apps/editor/src/css/contents.css
+++ b/apps/editor/src/css/contents.css
@@ -11,7 +11,7 @@
   color: #222;
   font-size: 13px;
   overflow-y: auto;
-  overflow-X: hidden;
+  overflow-x: hidden;
   height: calc(100% - 36px);
 }