new_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  from wdom.tag import NewTagClass as NewTag
  from wdom.tag import *
  
  
  css_files = [
      'http://yui.yahooapis.com/pure/0.6.0/pure-min.css',
  ]
  
  Button = NewTag('Button', bases=Button, class_='pure-button')
  DefaultButton = NewTag('DefaultButton', 'button', Button)
  PrimaryButton = NewTag('PrimaryButton', 'button', Button, class_='pure-button-primary')
  SuccessButton = NewTag('SuccessButton', 'button', Button)
  InfoButton = NewTag('InfoButton', 'button', Button)
  WarningButton = NewTag('WarningButton', 'button', Button)
  DangerButton = NewTag('DangerButton', 'button', Button)
  ErrorButton = NewTag('ErrorButton', 'button', Button)
  LinkButton = NewTag('LinkButton', 'button', Button)
  
  Form = NewTag('Form', 'form', Form, class_='pure-form')
  
  Table = NewTag('Table', 'table', Table, class_='pure-table')
  
subject: Add pure css