diff --git a/docs/configuration.md b/docs/configuration.md
index 6f9d602..315f45b 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -281,6 +281,7 @@ theme:
 > .widget-type-rss a {
 >     font-size: 1.5rem;
 > }
+> ```
 >
 > In addition, you can also use the `css-class` property which is available on every widget to set custom class names for individual widgets.