cleanup and add mobile support

src/components/ui/card.tsx

@@ -3,5 +3,5 @@ export function Card({
 }: Readonly<{
   children: React.ReactNode;
 }>) {
-  return <div className="bg-secondary rounded-lg p-4 min-w-[600px] max-w-full flex flex-row gap-2">{children}</div>;
+  return <div className="bg-secondary rounded-lg p-4 w-full">{children}</div>;
 }