index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Weact - A React Like Web Framework!</title>
  <style>
    .weact-title {
      color: red;
    }
  </style>
</head>
<body>
  <div id="root"></div>
  <script src="./index.js"></script>
</body>
</html>