.banner {
	width: 100%;
	height: 100%;
	position: relative;
	overflow: hidden;
	cursor: pointer;
}
.imgbox {
	width: 100%;
	height: 100%;
	position: relative;
	overflow: hidden;
}
.img {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	display: none;
}
.im {
	display: block;
}