fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <style> body { background-image: url('/images/htmlcss/smiley.gif'); background-repeat: no-repeat; background-attachment:fixed; background-position: 30% 20%; } </style> </head> <body> <p><b>注意：</b>该属性工作在 Firefox 和 Opera, background-attachment 属性会被设置为 "fixed"。</p> </body> </html>
运行结果