title: add top or bottom border to broken tables printed using wkhtmltopdf
body: <p>I use wkhtmltopdf to generate PDF files from html files that were generated automatically. I have several tables in these html files, and when printed into PDF using wkhtmltopdf, some tables could be broken into several pages. I want to add bottom border and top border to these broken tables, but could not find a working method.</p>
  
  <p>Any suggestion?</p>
  
  <p>Thanks a lot for the help!</p>
  
  <p>Ying</p>