module Playbook::JustifyContent

def justify_content_props
  selected_props = justify_content_options.keys.select { |sk| try(sk) }
  return nil unless selected_props.present?
  selected_props.map do |k|
    justify_content_value = send(k)
    if justify_content_value.is_a?(Hash)
      justify_content_value.map do |media_size, justify_value|
        "justify_content_#{media_size}_#{justify_value.underscore}" if justify_content_values.include? justify_value
      end
    else
      "justify_content_#{justify_content_value.underscore}" if justify_content_values.include? justify_content_value
    end
  end.compact.join(" ")
end