<!DOCTYPE html> <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <style> p { font-family: sans-serif; font-size: 24pt; } .small { font-size-adjust: 0.25; } .large { font-size-adjust: 0.9; } </style> <body> <p>hello</p> <p class="small">small</p> <p class="large">world</p> </body> </html>