title: While using Colspan, border-right of the last column disappears
body: <p>I am currently using DOMPDF to convert html to PDF format. When i have multiple columns in one row, the last column has no right border. I read somewhere that it might be because i am using percentage but with pt and px, i still get the same result. I also have another row using 50% as my colspan and it shows the border-right on the last column. Any solution for that one?</p>
  
  <p>This is how it looks:
  <img src="https://i.stack.imgur.com/7FGkE.png" alt="enter image description here"></p>
  
  <p>Here is another:
  <img src="https://i.stack.imgur.com/CR05f.png" alt="enter image description here"></p>
  
  <p>I have also attached an image of how i formatted the code.
  <img src="https://i.stack.imgur.com/pIpJr.png" alt="enter image description here"></p>
  
  <p>If my question seems unclear and need more details, please let me know and I will make it more detailed.</p>