*{margin:0;padding:0;font-family: 微软雅黑;}
.clear{
    clear:both;
}

.top_bg{
    width:100%;
    margin: 0 auto;
    height:40px;
    border-bottom: 1px solid #f5efef;
}
.top{
    width:1200px;
    margin:0 auto;
    font-size:12px;
    height:40px;
    line-height: 40px;

}
.header{
    width:1200px;
    margin:0 auto;
}
.logo{
    float:left;
    margin-top:30px;
    width:290px;
}
.desc{
    float:left;
    margin-top:35px;
    margin-left:25px;
    width:400px;
}
.hotline{
    float:right;
    margin-top:30px;
    width:260px;
    margin-right:120px;
}
.hotline_img{
    float:left;
}
.hotline_font{
    float:left;
}
.nav_bg{
    width:100%;
    margin:0 auto;
    height:480px;
    background: #00a52b;
    height:48px;
    margin-top:20px;
}
.nav{
    width:1200px;
    margin:0 auto;
    
    /* line-height: 120px; */
    /* margin-top: 30px; */
}
li{
   list-style-type:none;/* 去掉li前的点 */
   float: left;/*将li设置成做浮动，变为联动*/
   color:white;
}
.nav a{
   display: block;/*将a变成块状*/
   width: 140px;/*设置块的宽度*/
   height: 48px;/*设置块的长度*/
   font-family: Microsoft Yahei;
   line-height: 50px;/*设置字体在块中的高度*/
   margin: 0px 0px;/*块里的高宽通过margin设置*/
   color:white;
   text-align: center;/*字体居中*/
   text-decoration: none;/*去掉下划线*/
   font-size: 16px;
}
.nav a:hover{
    background: #ff8d00;
}

/* 轮播图 */
.banner{
    width:100%;
    min-width: 1200px;
    height: 540px;
}

.swiper1 {
    width: 100%;
    height: 100%;
  }
  .hot_bg{
    background-color: #f4f4f4;
  }
  .hot{
      width:1200px;
      margin:0 auto;
      height:56px;
      line-height: 56px;
      
      
  }
  .hot_key{
    float: left;
  }
  .search{
     margin-top:0px;
    float:right;
    width:350px;
    height:40px;
    /* border: solid 1px grey; */
  }
  .hot li{
      margin-left:20px;
     color:grey;
  }
/* 产品中心 */
  .product{
      width:1200px;
      margin:0 auto;
  }


  .product_nav{
      height:50px;
      background: #f3f3f3;
      margin-left:29px;
      margin-bottom: 20px;
      line-height: 50px;
  }
  

/* .box{
    width: 180px;
    height: 100%;
    background-color: #6a8bbc;
} */

menu {
width: 250px;
height: calc(height-50);
max-height: 100%;
overflow: auto;
float:left;
/* background-color: #6a8bbc; */

}    
menu .menu-item {
position: relative;
/* margin-top: 10px; */
border-bottom:1px solid #e5e5e5;
}
menu .menu-item > input {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 46px;
opacity: 0;
cursor: pointer;
}
/* menu .menu-parent:hover{
background: #2a68ad;
} */
.menu-child a{

    text-decoration: none;
    color:grey;
    
}
menu .menu-parent{
    /* background: #2a68ad; */
    color:black;
    padding-left: 20px;
    
    }
/*menu .menu-parent:active{
color: #fff;
background-color: #5375f1;
}
menu .menu-parent:visited{
color: #fff;
background-color: #5375f1;
}*/
menu span {
display: block;
padding: 5px 10px;
font-size: 16px;
line-height: 36px;
cursor: pointer;
}
/*menu span:hover {
background: #1A2940;
color: #fff;
}
menu span:active{
color: #fff;
background-color: #5375f1;
}*/
menu span.menu-child {
font-size: 14px;
text-indent: 20px;
/* border-bottom:1px dashed grey; */
}
menu .menu-item-list {
max-height: 0;
overflow: hidden;
transition: all .3s ease;
}
menu :checked + .menu-item-list {
max-height: 500px;
}
.tdcolor { color:red }

.product_list{
    float:right;
    margin-top: 50px;
    width:948px;
}
.product_d{
    float:left;
    margin-left: 29px;
    text-align: center;
    margin-bottom: 20px;
    width:285px;
    height:285px;
    border:1px solid #e5e5e5;
    overflow: hidden;
}
.product_d p{
    margin-top: 20px;
}
.product_d img:hover{transform:scale(1.06);transition: all 0.5s;}
.left_2{
    width:250px;
}
.left_3{
    margin-top: 20px;
    
    
}
 .left_2_3{
    width:250px;
    height:80px;
    /* border:1px solid grey; */
    margin-top: 0px;
    background: #5da724;
   
} 
/* 关于我们 */
.about_bg{
    width:100%;
    margin:0 auto;
    height:545px;
}
.about{
    width:1200px;
    margin:0 auto;
    padding-top:90px;
}
.about_img{
    float:left;
    width:570px;
    height:360px;
    border: 5px solid white;
}
 .about_desc{
    margin-left:50px;
    float:left;
    width:550px;
  } 


/* 4优势*/
.advantage{
   
    margin-top:80px;
}
.advantage_title{
    width:1200px;
    margin:0 auto;
}
.advantage_1{
    width:1200px;
    margin:0 auto;
   
}
.advantage_2{
    width:1200px;
    margin:0 auto;
    margin-top:30px;
    
}
.advantage_3{
    width:1200px;
    margin:0 auto;
    margin-top:30px;
   
}
.advantage_4{
    width:1200px;
    margin:0 auto;
    margin-top:30px;
}

.ad_title1{
    float:left;
}
.ad_title2{
    float:left;
}
.ad_title3{
    float:left;
}
.advantage_content{
    margin-top: 60px;
}
.advantage_1_left{
    float:left;
    width:680px;
}
.advantage_1_right{
    float:left;
    width:500px;
}

.advantage_2_left{
    float:left;
    width:500px;
}
.advantage_2_right{
    float:left;
    width:640px;
    margin-left:60px;
    margin-top:20px;
}
.advantage_3_left{
    float:left;
    width:680px;
    margin-top:20px;
}
.advantage_3_right{
    float:left;
    width:500px;
}
.advantage_4_left{
    float:left;
    width:500px;
}
.advantage_4_right{
    float:left;
    width:640px;
    margin-left:60px;
    margin-top:20px;
}
/* 经典案例 */
.case_bg{
    width:100%;
    margin: 0 auto;
    background: #efefef;
    height:490px;
}
.case{
    width:1200px;
    margin:0 auto;
}
.case_title{
    padding-top:70px;
}
.case_content{
    margin-top:40px;
}

/* 新闻中心 */

.news{
    width:1200px;
    margin:0 auto;
    margin-top: 80px;
}
.news_content{
    margin-top:50px;
}
.news_left{
    float:left;
    width:600px;
}
.news_right{
    float:left;
    width:600px;
    /* margin-left:10px; */
}  
.news_left a{
    width:137px;
    height:38px;
    display:block;
    color:#5da524;
    text-decoration: none;
    text-align: center;
    line-height: 38px;
    border:1px solid #5da524;
    margin-top:30px;
}



/* 底部 */
.footer_bg{
    width:100%;
    margin:0 auto;
    background: #383838;
    height:308px;
    margin-top:90px;
}
.footer{
    width:1200px;
    margin:0 auto;
    color:white;
    padding-top:90px;
}
.footer p{
    line-height: 30px;
}
.footer1{
    float:left;
    width:375px;
}
.footer2{
    float:left;
    width:420px;
}
.footer3{
    float:left;
    width:200px;
}

.footer4{
    float:right;
    width:180px;
}
.bottom_bg{
    width:100%;
    margin:0 auto;
    background: #202020;
    height:60px;
}
.bottom{
    width:1200px;
    margin:0 auto;
    color:white;
}