<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>全屏图片</title> <style> div#div1{ position:fixed; top:0; left:0; bottom:0; right:0; z-index:-1; } div#div1 > img { height:100%; width:100%; border:0; } </style> </head> <body> <div id="div1"><img src="../image/loginsize.png" /></div> </body> </html>
原文：http://www.cnblogs.com/hllive/p/5571272.html