<div class="content-wrapper">
    <!-- Main content -->
    <div class="content">
      <div class="container">
        <div class="row">
          <div class="col-lg-12">
            <div class="card">
              <div class="card-body mt-4">
                <div id="calendar"></div>
              </div>
            </div>
          </div>
        </div>
        <!-- /.row -->
      </div><!-- /.container-fluid -->
    </div>
    <!-- /.content -->
  </div>