def remove_class(selector, *class_names)
      select(selector).each do |element|
        class_list = ClassList.new(element)
        class_list.remove(class_names)
      end
    end
def remove_class(selector, *class_names)
      select(selector).each do |element|
        class_list = ClassList.new(element)
        class_list.remove(class_names)
      end
    end
Removes the given class names from the selected elements.

 Ignores class names that are not present.

 @param [String] selector a CSS or XPath string describing the elements to
   transform
 @param [String] class_names a CSS class name that should be removed
 @example
   remove_class('a#home', 'selected')
   find('a#home').remove_class('selected')