diff --git a/public/style.css b/public/style.css
index d4b2ff0..7bae680 100644
--- a/public/style.css
+++ b/public/style.css
@@ -105,7 +105,8 @@ body {
 #game-board {
   position: relative;
   width: 82svw;
-  height: 82svw;
+  max-width: 480px;
+  aspect-ratio: 1/1;
   background-color: var(--color-bg-tertiary);
   border: 2px solid var(--color-neutral-700);
 }