function Div(el)
  if el.classes:includes('section') then
    local attr = pandoc.write(pandoc.Pandoc({pandoc.Div({}, el.attr)}), 'html')
    attr = attr:match('<div(.-)>') or ''
    return {
      pandoc.RawBlock('html', '<section' .. attr .. '>'),
      el.content,
      pandoc.RawBlock('html', '</section>')
    }
  elseif el.classes:includes('article') then
    local attr = pandoc.write(pandoc.Pandoc({pandoc.Div({}, el.attr)}), 'html')
    attr = attr:match('<div(.-)>') or ''
    return {
      pandoc.RawBlock('html', '<article' .. attr .. '>'),
      el.content,
      pandoc.RawBlock('html', '</article>')
    }
  end
  return el
end