ios bg problem

gistfile1.css

.container {
    position: relative;
	margin:77px 0;
	height:2209px;
	background: url(../images/bg.jpg) no-repeat 50% 0;
	-webkit-background-size: 3000px 2209px;
	
	
	font-family: 'Conv_Underdog', Tahoma, sans-serif;
	font-size:14px;
	color: #3d2415;	
	
}
@media only screen and (max-device-width: 480px){
	.container{
		background: 
		url(../images/bgs/1.jpg) no-repeat 50% 0,
		url(../images/bgs/2.jpg) no-repeat 50% 300px,
		url(../images/bgs/3.jpg) no-repeat 50% 600px,
		url(../images/bgs/4.jpg) no-repeat 50% 900px,
		url(../images/bgs/5.jpg) no-repeat 50% 1200px,
		url(../images/bgs/6.jpg) no-repeat 50% 1500px,
		url(../images/bgs/7.jpg) no-repeat 50% 1800px,
		url(../images/bgs/8.jpg) no-repeat 50% 2100px;
		-webkit-background-size: 3000px 300px,3000px 300px,3000px 300px,3000px 300px,3000px 300px,3000px 300px,3000px 300px,3000px 109px;
	}
}