YoutubeDL-Material/src/index.html

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>YoutubeDLMaterial</title>
  <base href="/">

  <meta name="viewport" content="width=device-width, initial-scale=1">

  <link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <link href="https://unpkg.com/@angular/material/prebuilt-themes/indigo-pink.css" rel="stylesheet">    <script src="systemjs.config.js"></script>
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">

</head>
<body>
  <app-root></app-root>
</body>
</html>