diff --git a/lib/site_template/_sass/_base.scss b/lib/site_template/_sass/_base.scss
index 5433144c..a7cbadfe 100644
--- a/lib/site_template/_sass/_base.scss
+++ b/lib/site_template/_sass/_base.scss
@@ -136,7 +136,7 @@ code {
 
 pre {
     padding: 8px 12px;
-    overflow-x: scroll;
+    overflow-x: auto;
 
     > code {
         border: 0;