diff --git a/lib/mixing_tab.dart b/lib/mixing_tab.dart
index adfb68a..c8b2666 100644
--- a/lib/mixing_tab.dart
+++ b/lib/mixing_tab.dart
@@ -12,7 +12,7 @@ class _MixingTabState extends State<MixingTab> {
   @override
   Widget build(BuildContext context) {
     double screenWidth = MediaQuery.of(context).size.width;
-    int cols = screenWidth > 550 ? 2 : 1;
+    int cols = 1 + (screenWidth ~/ 550);
     int cardHeight = 110;
 
     return SizedBox.expand(