<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Feather</title>
</head>
<body>
  <i data-feather="eye"></i>
  <i data-feather="heart"></i>
  <i data-feather="feather"></i>

  <script src="https://unpkg.com/feather-icons"></script>
  <script>
    feather.replace()
  </script>
</body>
</html>