Relative units giving rise to unequal side margins
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/2000/REC-xhtml1-20000126/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>Relative units giving rise to unequal side margins</title> <style type="text/css"> p { font-size: 1em; margin: 0 0 0 2em; } h1 { font-size: 1.5em; margin: 0 0 0 2em; } </style> </head> <body> <div> <h1>A heading</h1> <p>Some body text</p> </div> </body> </html>