diff --git a/src/style.css b/src/style.css
index 7bcf0d0..84cd714 100644
--- a/src/style.css
+++ b/src/style.css
@@ -1,3 +1,26 @@
+/*
+Copyright (c) 2011-2021 Hiltjo Posthuma <hiltjo@codemadness.org>
+
+This file was originaly part of sfeed 
+(https://codemadness.org/sfeed-simple-feed-parser.html)
+and is distributed under the ISC License.
+
+
+ISC License
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+ 
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
 body {
 	font-size: 9pt;
 	color: #333;