Add Hello World page

index.html

@@ -0,0 +1,21 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <title>Hello World</title>
+  <style>
+    :root { font-family: system-ui, sans-serif; color-scheme: light dark; }
+    body { min-height: 100vh; margin: 0; display: grid; place-items: center; }
+    main { text-align: center; padding: 2rem; }
+    h1 { font-size: clamp(2.5rem, 8vw, 6rem); margin: 0 0 .5rem; }
+    p { opacity: .7; }
+  </style>
+</head>
+<body>
+  <main>
+    <h1>Hello World 👋</h1>
+    <p>Deployed by @Arrowstack through Coolify.</p>
+  </main>
+</body>
+</html>