<div id="books"><div class="container">
  <div class="row">
    <div class="col-md-12">
      <table class="table table-striped">
        <thead>
          <tr>
            <th>Title</th>
            <th>Author</th>
            <th>ISBN</th>
            <th>Review</th>
          </tr>
        </thead>
        <tbody>
          <tr ng-repeat="book in books track by book._id">
            <td>{{book.title}}</td>
            <td>{{book.author}}</td>
            <td>{{book.isbn}}</td>
            <td>{{book.review}}</td>
            </tr>
          </tbody>
        </table>
      </div>
    </div>
  </div>
</div>

<div id="books">
  <div class="container">
    <div class="row">
      <div class="col-md-12">
        <table class="table table-striped">
          <thead>
            <tr>
              <th>Title</th>
              <th>Author</th>
              <th>ISBN</th>
              <th>Review</th>
            </tr>
          </thead>
          <tbody>
            <tr ng-repeat="book in books track by book._id">
              <td>{{book.title}}</td>
              <td>{{book.author}}</td>
              <td>{{book.isbn}}</td>
              <td>{{book.review}}</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
    </div>
  </div>
</div>

Add missing closing div tag
Add missing closing div tag
