diff --git a/issues/_common/header b/issues/_common/header
index c82ad8d..650b314 100644
--- a/issues/_common/header
+++ b/issues/_common/header
@@ -72,6 +72,10 @@ p {
     text-justify: auto;
 }
 
+pre {
+    overflow: scroll;
+}
+
 html, body {
     font-size: 1.1em;
     font-family:serif;