diff --git a/src/ui/css/diff2html.css b/src/ui/css/diff2html.css
index e35e607..36a6f50 100644
--- a/src/ui/css/diff2html.css
+++ b/src/ui/css/diff2html.css
@@ -99,6 +99,7 @@
 }
 
 .d2h-files-diff {
+  display: flex;
   width: 100%;
 }