docs: function (state) {
              var features = document.querySelectorAll('.feature-with-scenarios'),
                  scenarios,
                  counter = 0;
  
              for (var i = 0; i < features.length; i++) {
                  scenarios = features[i].querySelectorAll('.scenario');
                  counter = 0;
                  for (var j = 0; j < scenarios.length; j++) {
                      if (scenarios[j].classList.contains(state)) {
                          counter++;
                      }
                  }
                  if (counter === scenarios.length) {
                      features[i].classList.add('hidden');
                  }
              }
          }