index.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="styles.css">
  <!-- jQuery -->
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <!-- jQuery UI -->
  <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
  <script defer src="script.js"></script>
  <link rel="shortcut icon" type="image/png" href="./images/list-icon.png">
  <title>To-do List</title>
</head>

<body>
  <div class="to-do-list-container">
    <h1>To-Do List</h1>
    <p><em>Click and drag to reorder, check the item to cross it off.</em></p>
    <input type="text" id="fname" name="fname">
    <div id="addItem">Add list item</div>
    <ol></ol>
  </div>
</body>

</html>