module Nokogiri::XML::Searchable

def at_css(*args)

See Searchable#css for more information.

match. +rules+ must be one or more CSS selectors.
Search this object for CSS +rules+, and return only the first

call-seq: css *rules, [namespace-bindings, custom-pseudo-class]
# 
def at_css(*args)
  css(*args).first
end