<!DOCTYPE html> <html> <head> <style type="text/css"> html, body { margin: 0; padding: 0; } html { background-color: white; margin: 10px 0; } body { background-color: red; margin: 20px 0; } div { background-color: green; margin: 40px 0; height: 100px; } </style> </head> <body> <div></div> </body> </html>