*{
    margin: 0;
    padding: 0;
}
.chan{
    width: 100%;
    height: 500px;
   background-image: url("../images/yuyin/banner.png");
    float: left;
    text-align: center;
    background-size: 100% 100%;
}
.jieshao{
    width: 100%;
    height: 380px;
    float: left;
    position: relative;
    top: 20px;
}
.jieshao1{
    width: 1000px;
    height: 380px;
    margin: 0 auto;
}
.jieshao1-text{
    width: 100%;
    height: 20%;
    text-align: center;
    line-height: 120px;
    font-size: 40px;
}
.jieshao2-text{
    width: 100%;
    height: 10%;
    text-align: center;
    line-height:80px;
    font-size: 20px;
}
.jieshao3-text{
    width: 100%;
    height: 50%;
    line-height: 50px;
    font-size: 18px;
    position: relative;
    top: 10%;
    text-indent: 30px;
    color: #888888;
}
.jieshao3-text p{
    margin-left: 100px;
}
.hangye{
    width: 100%;
    height: 500px;
    float: left;
}
.hangye1{
    width: 1000px;
    height: 500px;
    margin: 0 auto;
}
.hangye1-text{
    width: 100%;
    height: 20%;
    font-size: 40px;
    text-align: center;
    line-height: 120px;
}
.hangye2{
    width: 100%;
    height: 70%;
    float: left;
    position: relative;
    top: 10%;
    text-align: center;
}
.hangye2 li{
    float: left;
    width: 30%;
    height: 90%;
    margin-left: 5%;
}
.hangye2 li p{
    font-size: 15px;
    text-align: center;
    line-height: 30px;
    position: relative;
    top: 30px;
    color: #999;
}
.hangye2 li p span{
    font-size: 20px;
    color: black;
}
.jishu{
    width: 100%;
    height: 400px;
    float: left;

}
.jishu1{
    width: 1000px;
    height: 400px;
    margin: 0 auto;
}
.jishu1-text{
    width: 100%;
    height: 20%;
    line-height: 120px;
    text-align: center;
    font-size: 40px;
}
.jishu2{
    width: 100%;
    height: 70%;
    float: left;
    position: relative;
    top: 10%;
}
.jishu2 ul{
    width: 100%;
    height: 100%;
    float: left;
}
.jishu2 ul li{
    width: 22%;
    height: 90%;
    float: left;
    margin-left: 4%;
    text-align: center;
}
.jishu2 ul li img{
    margin-top:20px;
}
.jishu2 ul li p{
    font-size: 15px;
    line-height: 30px;
    position: relative;
    top: 20px;
    color: #999;

}
.jishu2 ul li p span{
    font-size: 20px;
    position: relative;
    color: black;
}
.tongzhi{
    width: 100%;
    height: 400px;
    float: left;
}
.tongzhi1{
    width: 1000px;
    height: 100%;
    margin: 0 auto;
}
.tongzhi1-img{
    width: 40%;
    height: 100%;
    float: left;
    text-align: center;
}
.tongzhi1-img img{
    margin-top: 40px;
}
.tongzhi1-text{
    width: 60%;
    height: 100%;
    float: left;
}
.tongzhi1-text p{
    margin-top: 50px;
    margin-left: 80px;
    font-size: 15px;
    line-height: 40px;
    color: #999;
}
.tongzhi1-text p span{
    font-size: 20px;
    color: black;

}