/*banner*/
.none{display:none;}
.banner{min-width:1200px;height:650px;position:relative;margin:0 auto;overflow:hidden;z-index:1;}
.banner_show{width:100%;text-align:center;height:650px;overflow:hidden;position:relative;}
.bannger_inbox{position:absolute;left:0%;top:0;}

/*翻页*/
.banner_pre_next{position:relative;z-index:105;top:306px;width: 1500px;left:0%;height:37px;margin-left: 195px;}
.banner_pre_next a{width:37px;height:37px;background:url(btn.png) no-repeat;text-indent:-999em;}
.banner_pre_next .banner_btn_left{position:absolute;left:-37px;background-position:0px 0px;}
.banner_pre_next .banner_btn_right{position:absolute;right:-37px;background-position:-37px 0px;}
 
 
@media screen and (min-width: 1800px){
	.bannger_inbox img{ width: 100%; height: auto}
}  
@media screen and (max-width: 1700px)and (min-width: 1740px){
	.banner{min-width:1200px;height:600px;position:relative;margin:0 auto;overflow:hidden;z-index:1;}
.banner_show{width:100%;text-align:center;height:600px;overflow:hidden;position:relative;}
	.bannger_inbox img{ width: 100%; height: auto}
} 
@media screen and (min-width: 1500px)and (max-width: 1700px){
	.banner{min-width:1200px;height:550px;position:relative;margin:0 auto;overflow:hidden;z-index:1;}
.banner_show{width:100%;text-align:center;height:550px;overflow:hidden;position:relative;}
	.bannger_inbox img{ width: 100%; height: auto}
}
@media screen and (min-width: 1200px)and (max-width: 1500px){
	.banner{min-width:1200px;height:450px;position:relative;margin:0 auto;overflow:hidden;z-index:1;}
.banner_show{width:100%;text-align:center;height:450px;overflow:hidden;position:relative;}
	.bannger_inbox img{ width: 100%; height: auto}
}
@media screen and (min-width: 1000px)and (max-width: 1199px){
	.banner{min-width:1200px;height:400px;position:relative;margin:0 auto;overflow:hidden;z-index:1;}
.banner_show{width:100%;text-align:center;height:400px;overflow:hidden;position:relative;}
	.bannger_inbox img{ width: 100%; height: auto}
}