diff --git a/_sass/main.scss b/_sass/main.scss
index 662a595..cb9ae94 100644
--- a/_sass/main.scss
+++ b/_sass/main.scss
@@ -54,6 +54,7 @@ pre:not(.highlight) {
 pre {
     border: 1px solid #000;
     border-radius: 3px;
+    overflow-x: auto;
 }
 
 #navbar .link {