docs: function () {
              window.scrollTo(0, 0);
              var chart = document.querySelector('.scenario-chart'),
                  chartBtn = document.querySelectorAll('.btn-chart');
              if (chart.style.display != 'block') {
                  chart.style.display = 'block';
                  document.body.style.overflow = 'hidden';
              } else {
                  chart.classList.add('chart-hidden');
                  document.body.style.overflow = 'auto';
                  app.navigation.removeActiveClass(chartBtn);
              }
              this.toggleChartBackdrop();
          }