body{
	padding: 0;
}
.index-btn{
	position: absolute;
	z-index: 10;
	left: 0;
	top: 50%;
	margin: -2.133rem 0 0 0;
}
.index-btn img{
	width: 100%;
}
.left img{
	width: 100%;
}
.right img{
	width: 100%;
}