diff --git a/web_src/less/_repository.less b/web_src/less/_repository.less
index 39362722d..f7087d4d3 100644
--- a/web_src/less/_repository.less
+++ b/web_src/less/_repository.less
@@ -3187,6 +3187,7 @@ td.blob-excerpt {
 }
 #diff-file-boxes {
   flex: 1;
+  max-width: 100%;
 }
 
 #diff-file-tree {
@@ -3295,6 +3296,10 @@ td.blob-excerpt {
   }
 }
 
+.diff-file-body {
+  overflow-x: scroll;
+}
+
 .diff-stats-bar {
   display: inline-block;
   background-color: var(--color-red);