<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title> Juhanna Kim </title>
  <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
  <script type="text/javascript" src="juhannakim.github.io/javascript.js"></script>
  <link rel="stylesheet" type="text/css" href="theme.css">
 </head>
<body>
  {{content}}
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title> Juhanna Kim </title>
  <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
  <script type="text/javascript" src="juhannakim.github.io/javascript.js"></script>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
  <link rel="stylesheet" type="text/css" href="theme.css">
 </head>
<body>
  {{content}}
</body>
</html>

Add font awesome in head tag
Add font awesome in head tag
