change max-width to 420

index.html

@@ -22,7 +22,7 @@
 
     #unity-container {
       width: 100vw; /* Fill the viewport width */
-      max-width: 520px; 
+      max-width: 420px; 
       height: 100vh; /* Fill the viewport height */
       display: flex;
       justify-content: center;