*{
    margin: 0;
    padding: 0;
}
body{
    overflow-y: scroll;
    /* overflow-x: hidden; */
    /* height: 5500px; */
    margin: 0px;
    /* width: 1920px; */

}
.content{
    width: 100%;

}
.contentt{
    width: 1320px;
    height: 100px;
    margin: 0 auto;
}
.zuoshang{
    width: 180px;
    height: 60px;
    /* background-color: red; */
    float:left;
    margin-top: 15px;
    margin-right: 80px;
    /* margin-left: 200px; */
    /* background-image: url(imgs/1.png);
    background-repeat: no-repeat;
    background-position: center; */
}
.zuoshang img{
    width: 100%;
    height: 100%;
}
.zuoshangg{
    width: 250px;
    height: 100px;
}
.container{
    float:left;
    margin-left: 50px auto;
    /* background-color: sienna; */
    height: 100px;
    margin-right: 80px;
}
.nav-item{
    float: left;
    width: 100px;
 
  text-align:center; 
  margin-top: 40px;
  border-right:1px solid #ebebeb;
  /* background-color: salmon; */
}
.nav-item a{
    font-family: simsun;
    text-decoration: none;
color: black;
}
.nav-list{
    list-style-type: none;
}
.youshang{
    float: left;
    width: 200px;
    height: 100px;
    /* background-color: rosybrown; */
    /* margin-left: 50px; */
    /* margin-right: 150px; */
    
}
.lianxi{
    margin-top: 30px;
}
.you1{
    height: 20px;
    width: 20px;
}
.you2{
    height: 20px;
    float: left;
}
.you3{
    height: 20px;
    width: 20px;
    float: left;
}
.you3 img{
    width: 100%;
    height: 100%;
}
.window {
    width: 100%;
    height: 600px;
    overflow: hidden;
    position: relative;
}

.box {
    width: 500%;
    height: 600px;
}

.box a {
    float: left;
    width: 20%;
    height: 100%;
    font-size: 50px;
    text-align: center;
    line-height: 300px;
}

.box a:nth-child(1) {
    background: url(imgs/lunbo11.png);
}

.box a:nth-child(2) {
    background: url(imgs/lunbo2.png);
}



.box a:nth-child(3) {
    background:url(imgs/lunbo11.png);
}

.btns {
    width: 100%;
    left: 0;
    bottom: 10px;
    position: absolute;
   
    z-index: 10;
}

.btns li {
    width: 14px;
    height: 14px;
    background: #ffffff;
    cursor: pointer;
    float: left;
    box-shadow: 0 0 5px #000;
    opacity: 0.7;
    border-radius: 50%;
    margin: 0 5px;
    

   
  
}
.btns li:nth-child(1) {
    background-color: #0F6FB8;
    margin-left: 48.7%;
}
/* .banner{
    width: 100%;
    height: 500px;
    margin: 0 auto; */
    /* min-width: 1920px; */
/* } */
/* .container{
    width: 1320px;
    height: 500px;
    margin: 0 auto;
} */
/* .lunbo_img{
    width: 100%;

 
} */
/* 字 */
/* .zi{
    width: 100%;
    height: 100px;
    float: left;
margin: 0 auto;
    background-color: tan;
    

} */
.zi ul{
    width: 100%;
    height: 100px;
    float: left;
    margin: 0 auto;
    /* background-color: steelblue; */
  
    

}
.zi ul li{
    width: 30%;
    height: 70px;
    float: left;
   margin-top: 15px;
   margin-left: 30px;
   
    /* background-color: springgreen; */
    
    
}
/* 左右轮播 */
.new{
    width: 100%;
    height: 600px;
    margin-top: 100px;
    background-color: rgb(243, 242, 241);
    /* min-width: 1920px; */
}
.neww{
    width: 100%;
    height: 1200px;
    padding-top: 100px;
}
.out_arrow_wheel{
    width:1100px;
    height: 350px;
    margin:0 auto;
    
}
.arrow_wheel{
    float: left;
    width:900px;
    height: 350px;
    
    /* background-color:green; */
    overflow: hidden; 
}
.arrow_wheel_box{
   
    height: 100%;
    
    /* border: 1px solid red; */
    list-style-type: none;
   
}

.arrow_wheel_box li{
    
    width: 200px;
    height: 100%;
    background-color:#ccc;
    margin-right: 12px;
    margin-left: 12px;

    float: left;
}
.arrow_wheel_box li a{
    display: block;
    border:none;
    width: 200px;
    height: 100%;
    /* border:1px solid red; */
    margin:auto;
    /* margin-right: 5px; */
}
.arrow_wheel_box li a img{
    width:200px;
    height: 350px;
}
/* .left:hover,.right:hover{
    

} */
.left{
    float: left;
    font-size:100px;
    left: -50px;
    height: 100%;
    line-height:260px;
    cursor: pointer;
    
  
}
.right{
    float: left;
    font-size:100px;
    right: -50px;
    height: 100%;
    line-height:260px;
    cursor: pointer;
  
}  
.service{
    width: 100%;
    margin-top: 100px;
}
.servicee{
    width: 1200px;
    margin: 0 auto;
    margin-left: 120px;

}
.servicee img{
    width: 500px;
    margin-right: 20px;
}
.product{
    width: 100%;
    margin-top: 100px;

}
.productt{
    /* border:1px solid #F00; */
    width: 100%;
    margin: auto;
}
.productt tr{
    /* border:1px solid #F00; */
    width: 100%;
    height: 200px;
    
}
.productt tr td{
    width: 33%;
    height: 200px;
    /* border:1px solid #F00; */
}
.productt tr td img{
    width: 100%;
    height: 100%;
}
.youshi{
    width: 100%;
    margin-top: 100px;
}
.youshi ul{
    width: 1000px;
    margin: 0 auto;
}
.youshi ul li{
    width: 100%;
    height: 300px;
    margin-bottom: 50px;
}
.youshi ul li img{
    width: 100%;
    height: 100%;
}
.zhongjian{
    width: 1200px;
    margin: auto;
}
.zhongjian img{
    width: 100%;
}
.footer{
    margin-bottom: 0;
    background-color: rgb(31, 31, 32);
    height: 350px;
    width: 100%;

}
.biao{
    height: 50px;
    width: 120px;
    padding-top: 30px;
    margin: 0 auto;

}
.biao img{
    height: 100%;
    width: 100%;
}
.nav{
    height: 50px;
    width: 400px;
    margin: 0 auto;
}
.nav ul{
    float: left;

}
.nav ul li{
    float: left;
    margin-left: 20px;
    font-size: 10px;
}
.center{
    width: 600px;
    height: 200px;
    margin: 0 auto;
}
.zuo{
    width: 190px;
    height: 200px;
    float: left;
}
.zuo ul li{
    font-size: 10px;
    margin-bottom: 5px;
}
.zuo ul li img{
    width: 10px;
    height: 10px;
}
.you{
    float: left;
}
.zhong{
    float: left;
    margin-right: 50px;
}