feat: added tool ground work

src/components/PageWrapper.tsx

@@ -0,0 +1,13 @@
+import { ReactNode } from 'react';
+
+interface PageWrapperProps {
+  children: ReactNode;
+}
+
+export default function PageWrapper({ children }: PageWrapperProps) {
+  return (
+    <div style={{ maxWidth: 780, margin: 'auto', display: 'block' }}>
+      {children}
+    </div>
+  );
+}