Create basic homepage and format docs

docs/pages/_app.mdx

@@ -1,10 +1,12 @@
-import '../styles.css';
-import 'nextra-theme-docs/style.css';
+import "../styles.css";
+import "nextra-theme-docs/style.css";
+import { GeistSans } from "geist/font/sans";
 
 export default function App({ Component, pageProps }) {
   return (
-    <main>
+    <main className={GeistSans.className}>
       <Component {...pageProps} />
     </main>
   );
-}
+
+}