diff --git a/msgbox/msgbox.css b/msgbox/msgbox.css
index 3f8c25ba..c3bda969 100644
--- a/msgbox/msgbox.css
+++ b/msgbox/msgbox.css
@@ -140,6 +140,7 @@
 
 #message-box-buttons button {
   margin: 0 .375rem;
+  width: auto;
 }
 
 /* popup */