diff --git a/doc-src/content/stylesheets/_reference.scss b/doc-src/content/stylesheets/_reference.scss
index f3f98dfd..f401f38a 100644
--- a/doc-src/content/stylesheets/_reference.scss
+++ b/doc-src/content/stylesheets/_reference.scss
@@ -44,6 +44,7 @@ body.reference {
       @include transition;
       @include transparent;
       display: none;
+      overflow-x: auto;
     }
     pre.shown {
       display: block;