tasks_index.html

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  <title>ToDo App</title>
</head>
<body>
  <div class="jumbotron text-center">
    <h1>ToDo's</h1>
  </div>

  <div class="container">
    <div class="row">
      <div class="col-sm-4">
      </div>
      <div class="col-sm-4">
        <h3>Tasks List</h3>
        <table>
          <tr>
            <th>Task</th>
            <th>Due?</th>
          </tr>
          {% for task in task_list %}
          <tr>
            <td>
              {{ task.title }}
            </td>
            <td>
              {{ task.due }}
            </td>
          </tr>
          {% endfor %}
        </table>
      </div>
      <div class="col-sm-4">
      </div>
    </div>
  </div>
</body>
</html>