Lizenz und Readme hinzugefügt

static/css/style.css

@@ -1,3 +1,14 @@
+/*
+ * Sicherheitsunterweisung
+ * Copyright (C) 2023  Jason Streifling
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 .correct {
   color: #00ff00;
 }