
              </div>
              <div class="card-body">
                <canvas class="chart" id="line-chart" style="min-height: 250px; height: 250px; max-height: 250px; max-width: 100%;"></canvas>
              </div>
              <!-- /.card-body -->
              <div class="card-footer bg-transparent">
                <div class="row">
                  <div class="col-4 text-center">
                    <input type="text" class="knob" data-readonly="true" value="20" data-width="60" data-height="60