body{
    width: 1000px;
    margin: auto;
}
.img_1{
 display: block;
 position: relative;
 width: 100%;
 height: 100px;
}
.s_1{
 width: 100%;
 position: relative;
 overflow: hidden;
}
.img_1_1{
 width: 100%;
}
a{
 text-decoration:none;
}
a:visited {
 color:black;
 text-decoration:none;
}
.broadcast{
 margin-top: -16px;
 width: 100%;
 position: relative;
 overflow: hidden;
}
.broadcast ul{
 width:200%;
 left: 0;
 top: 0;
 padding: 0;
 list-style: none;
}
.broadcast li{
 width: 50%;
 left:0;
 float: left;
 list-style: none;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
}
.broadcast img{
 position: relative;
 width: 96%;
 height: 224px;
 margin: auto;
 display: block;
}
.broadcast ol{
 display: block;
 position: absolute;
 margin-top: 19.5%;
 margin-left: 42%;
}
.broadcast ol li{
 /* display: block;
 float: left;
 margin-left: 2%; */
 position: relative;
    float: left;
    margin-right:0.5rem ;
    width: 2rem; 
    height: 0.4rem;
      
    background-color:rgb(247, 242, 242);;
    /* background-color: black; */
    color: rgb(247, 242, 242); 
    text-align: center;
    cursor: pointer;
}
.broadcast ol li.first-li{
    background-color: black;
 /* background-color:rgba(248, 248, 248, 0.45); */
}
.s_2{
 width: 96%;
 height: 44px;
  margin-left: 2%;
 position: relative;
 margin-top: 20px;
 border-bottom: 1px black solid;
}
.s_3{
 margin: auto;
 width: 70%;
 height: 45px;
 float: left;
 text-align: center;
 margin-left: 0%;
}
.s_3 button{
 background-color: Transparent; 
 border-style: none;     
 outline: none; 
 margin-right: 16%;
 margin-top: 1%;

}
.btn_show{
 color:rgb(102, 96, 96);
 font-size: 22px;
 margin-left: 3%;
}
#div_1 {
 display: block;
}
.img_3{
 display: block;
 width: 92%;
 margin-top: -2%; 
 margin-left: 4%;
}
.show{
 display: none;
}
     .qianyan{
         border-bottom: 3px silver solid;
         width: 94%;
         height: 53px;
         margin-top: 3%;
         margin: auto;
     }
     .qianyan span{
         font-size: 20px;
         line-height: 53px;
     }
     .neirong{
         border-bottom: 0.5px silver solid;
         width: 94%;
         height: 50px;
         margin-top: 3%;
         margin: auto;
     }
     .neirong span{
         line-height: 50px;
         font-size: 19px;
     }
     .neirong_span{
         margin-left: 20%;
     }
     .neirong_span2{
         font-size: 22px;
         color: rgb(125 120 120);
         font-weight: bolder;
         margin-right: 5%;
     }
     #btn_1{
         color: black;
     }
     .img_jiangzuo{
         display: block;
         width: 212px;
         height: 45px;
         float: left;
         overflow: hidden;
     }