span vertical-align: sub;
<!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' xml:lang='en'> <head> <title>vertical-align</title> <style type='text/css'> p { font: 16px sans-serif; margin: 25px 0; } span#sub { vertical-align: sub; } span#super { vertical-align: super; } </style> </head> <body> <p> Subscript text is <span id='sub'>lowered</span> </p> <p> Superscript text is <span id='super'>raised</span> </p> </body> </html>