diff --git a/web/style/style.scss b/web/style/style.scss
index 7c88e6c..3738e6e 100644
--- a/web/style/style.scss
+++ b/web/style/style.scss
@@ -358,3 +358,13 @@ ul {
 pre.src, pre.example {
     overflow-y: auto;
 }
+
+pre {
+    .src-fish:before {
+        content: 'fish';
+    }
+
+    .src-rust:before {
+        content: 'rust';
+    }
+}