diff --git a/lib/phlexy_ui/class_list.rb b/lib/phlexy_ui/class_list.rb
index b7cd968..b731f13 100644
--- a/lib/phlexy_ui/class_list.rb
+++ b/lib/phlexy_ui/class_list.rb
@@ -19,6 +19,7 @@ def to_a
       classes = []
       add_component_class(classes)
       add_selected_modifiers_classes(classes)
+      add_conditioned_modifiers_classes(classes)
       add_responsive_modifiers_classes(classes)
       add_class_option_classes(classes)
       classes
@@ -46,6 +47,14 @@ def add_selected_modifiers_classes(classes)
       )
     end
 
+    def add_conditioned_modifiers_classes(classes)
+      modifiers_map.each do |modifier, class_name|
+        next unless options.delete(modifier)
+
+        classes << with_config_prefix(class_name)
+      end
+    end
+
     def html_classes_for_modifiers(modifiers, responsive_prefix: nil)
       modifiers.map do |modifier|
         with_responsive_prefix(