width height and absolute positioning
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <title></title> <style type='text/css'> p { padding: 10px; margin: 10px; border: 1px solid black; background: lightgray; position: absolute; top: 0; right: 0; bottom: 0; left: 0; } </style> </head> <body> <p> This is a test. This is a test. </p> </body> </html>