diff --git a/index.html b/index.html
index efe5048..9ea4b07 100644
--- a/index.html
+++ b/index.html
@@ -1 +1,11 @@
-<h1>Hello world!</h1>
\ No newline at end of file
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Document</title>
+</head>
+<body>
+  <h1>Hello world!</h1>
+</body>
+</html>
