1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>无标题文档</title> 6 <style> 7 .myt { 8 /* background:red url(images/img2.jpg) center center/500px 200px no-repeat;*/ 9 background:red url(images/img2.jpg) center center/500px 200px no-repeat; 10 width:500px; 11 height:200px; 12 margin:0 auto; 13 position:absolute; 14 margin-left:-250px; 15 margin-top:-100px; 16 top:50%; 17 left:50%; 18 } 19 </style> 20 </head> 21 <body> 22 <div class="myt"></div> 23 </body> 24 </html>
原文：http://www.cnblogs.com/lsr111/p/4399710.html