Set table border
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /> <title>Colgroup 2</title> <style> td, th { border: 1px solid black; } </style> </head> <body> <table> <caption>Personal details</caption> <colgroup style="background-color: #ccc;"></colgroup> <colgroup></colgroup> <colgroup span="3"></colgroup> <tr> <th rowspan="2">Name</th> <th rowspan="2">Place of residence</th> <th colspan="3">Date of birth </th> </tr> <tr> <th>dd</th> <th>mm</th> <th>yyyy</th> </tr> <tr> <td>P</td> <td>O</td> <td>14</td> <td>06</td> <td>1978</td> </tr> <tr> <td>V</td> <td>B</td> <td>12</td> <td>01</td> <td>1985</td> </tr> <tr> <td>L</td> <td>L</td> <td>01</td> <td>03</td> <td>1956</td> </tr> <tr> <td>E</td> <td>P</td> <td>28</td> <td>02</td> <td>1979</td> </tr> </table> </body> </html>