.banner_box {
    position: relative;
    margin-top: 120px;
}
.banner {
	width: 100%;
	height: 680px;
	position: relative;
	overflow: hidden;
	cursor: pointer;
}
.banner11{
	display:none;
	
	}
.imgbox {
	width: 100%;
	height:680px;
	position: relative;
	
	overflow: hidden;
}
.img {
	position: absolute;
	display: none;
	left: 50%;
	margin-left: -960px;
	display: inline;
}

.im {
	display: block;
}
.change {
	height: 100px;
	display: block;
	position: absolute;
	z-index: 20;
	opacity: 0.4;
	transition: 0.4s;
	top: 50%;
	margin-top: -50px
}
.change:hover {
	opacity: 1;
}
.pre {
	left: 1%;
}
.next {
	right: 1%;
}
.cirbox {
	width: 88px;
	position: absolute;
	bottom: 15px;
	z-index: 10;
	left: 50%;
	margin-left: -20px;
	cursor: pointer;
}
.cir {
	width: 12px;
	height: 12px;
	background-color: white;
	opacity: 0.4;
	float: left;
	border-radius: 6px;
	margin: 0 5px 0 5px;
	cursor: pointer;
}
.cir:hover {
	background-color: cyan;
	transition: 0.8s;
}
.cr {
	opacity: 1;
}
.cr:hover {
	background-color: white;
}
#slider { width: 100%; margin: 0 auto; }
.controls li { top: 50%; margin-top: -30px }
.controls li:nth-child(1) { left: 0; }
.controls li:nth-child(2) { right: 0; }
.pagination li { background-color: #ddd;}
.pagination li.active { background-color: #000; }
.responsive { width: 100%; height: auto; }
.clearfix:after { content: ""; display: table; clear: both; }
#slider{display:none;}
@media screen and (max-width:640px) {
.banner{ display: none;}
    .banner_box {
        margin-top: 0;
    }




#slider{
	display:block; overflow: hidden;
	}
.banner11 .imgbox img{
	width:100%;
	
	}		

.banner11 {
	width: 100%;
	overflow: hidden;
	
}


	
	}