def is_css_in_section?(css1, css2, flag=true)
      within("#{css1}") do
        if flag
          assert page.has_css?("#{css2}"), "Error: #{css2} not found in #{css1} !"
        else
          assert !page.has_css?("#{css2}"), "Error: #{css2} found in #{css1} !"
        end
      end
    end
def is_css_in_section?(css1, css2, flag=true)
      within("#{css1}") do
        if flag
          assert page.has_css?("#{css2}"), "Error: #{css2} not found in #{css1} !"
        else
          assert !page.has_css?("#{css2}"), "Error: #{css2} found in #{css1} !"
        end
      end
    end
Check that a css element is nested within another css element, set flag to check that it isn't