Add 404 page

src/pages/index.astro

@@ -3,8 +3,8 @@ import Layout from "../layouts/index.astro";
 ---
 
 <Layout>
-  <main class="max-w-prose mx-auto p-4 sm:p-8">
-    <pre>{
+  <pre
+    class="max-w-prose mx-auto p-4 sm:p-8 leading-tight">{
 `  ∧.,,∧ 𝜗𝜚
 (  ̳• · • ̳)   ᭢
 /      づ `}<a href="/"><em>lua.re</em></a> ᡣ𐭩
@@ -15,5 +15,4 @@ import Layout from "../layouts/index.astro";
 ・:。<small><a href="https://github.com/luaneko">gh/luaneko</a></small>
 
 🍡 🌸 🎀 🌙</pre>
-  </main>
 </Layout>