diff --git a/after/syntax/css/cascade-5.vim b/after/syntax/css/cascade-5.vim
new file mode 100644
index 0000000..e69de29
diff --git a/test/test.css b/test/test.css
index 46cf085..d2a8c9f 100644
--- a/test/test.css
+++ b/test/test.css
@@ -69,6 +69,10 @@
 	display: revert;
 }
 
+.cascade-5 {
+	display: auto;
+}
+
 @import "conditional-3.css" supports(display: auto);
 
 @supports (selector(.conditional-4)) {