diff --git a/doc/system-docinfo-footer.html b/doc/system-docinfo-footer.html
index 8e3910d..d0d391a 100644
--- a/doc/system-docinfo-footer.html
+++ b/doc/system-docinfo-footer.html
@@ -1,5 +1,6 @@
 <style>
 
 *:not(pre)>code { background: none; color: #600000; }
+:not(pre):not([class^=L])>code { background: none; color: #600000; }
 
 </style>