diff --git a/app/css/app.css b/app/css/app.css
index f6342ce..f0c81d4 100644
--- a/app/css/app.css
+++ b/app/css/app.css
@@ -715,6 +715,7 @@ button:focus {
   padding: 6px 12px;
   font-size: 21px;
   min-width: 300px;
+  max-width: 300px;
 }
 #settings input[type=text] span,
 #settings input[type=number] span,