<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <style type="text/css"> *{margin: 0; padding: 0; border: 0;} @keyframes animatedBird { from { background-position: 20px 20px, 30px 80px, 0 0; } to { background-position: 300px -90px, 30px 20px, 100% 0; } } @-webkit-keyframes animatedBird { from { background-position: 20px 20px, 30px 80px, 0 0; } to { background-position: 300px -90px, 30px 20px, 100% 0; } } @-ms-keyframes animatedBird { from { background-position: 20px 20px, 30px 80px, 0 0; } to { background-position: 300px -90px, 30px 20px, 100% 0; } } @-moz-keyframes animatedBird { from { background-position: 20px 20px, 30px 80px, 0 0; } to { background-position: 300px -90px, 30px 20px, 100% 0; } } .animate-area{ margin: 100px auto 0; width: 560px; height: 190px; background-image: url('http://static.oschina.net/uploads/space/2015/0814/152322_gbDp_2435847.png'), url('http://static.oschina.net/uploads/space/2015/0814/152322_7IfI_2435847.png'), url('http://static.oschina.net/uploads/space/2015/0814/152322_Xtfs_2435847.png'); background-position: 20px -90px, 30px 80px, 0px 0px; background-repeat: no-repeat, no-repeat, repeat-x; animation: animatedBird 4s linear infinite; -ms-animation: animatedBird 4s linear infinite; -moz-animation: animatedBird 4s linear infinite; -webkit-animation: animatedBird 4s linear infinite; overflow: hidden; } </style> </head> <body> <div class="animate-area"></div> </body> </html>