update a few minor comments in ioccc.css

This is a comment only edit.

ioccc.css

@@ -1,6 +1,8 @@
-/* Start of normalize.css ========================================================================== */
-/* see: https://necolas.github.io/normalize.css/ & https://nicolasgallagher.com/about-normalize-css/ */
-/* normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */
+/*
+ * normalize.css v8.0.1 | MIT License | https://github.com/necolas/normalize.css
+ * See: https://necolas.github.io/normalize.css/
+ * See: https://nicolasgallagher.com/about-normalize-css/
+ */
 
 /* Document ========================================================================== */
 
@@ -787,6 +789,7 @@ transition: all .3s ease;
     text-decoration: underline;
 }
 
+/* footer header */
 .footer h1, h2, h3, h4, h5, h6 {
     color: DarkBlue;
 }