diff --git a/site/rki-dashboard.css b/site/rki-dashboard.css
index ca60fb1..251fe1b 100644
--- a/site/rki-dashboard.css
+++ b/site/rki-dashboard.css
@@ -1,3 +1,8 @@
+/*
+ * Copyright (C) Benedikt Bastin, 2021
+ * SPDX-License-Identifier: CC-BY-SA-4.0
+ */
+
 body {
 	font-family: Noto Sans;
 	max-width: 1000px;