代码
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"><head> <title></title> <style type="text/css"> html, body { height: 100%; overflow: auto; } body { padding: 0; margin: 0; } </style></head><body> <form id="form1" style="height: 100%;"> <table style="height:100%; 100%;" border="0"> <tr> <td align="center" valign="middle">.....居中....</td> </tr> </table> </form></body>