body{
   background: #231838;
}
.con{
    background-image: url(../img/bg.jpg);
    background-size: cover;
    min-height: 100vh;
    max-width: 600px;
    margin: 0 auto;
    padding-bottom: 100px;
}
.con{
    display: block;
}
img{
    max-width: 100%;
    display: block;
}
.down{
    width: 65%;
    margin: 35px auto;
}
.quanmin{
    width: 92%;
    margin: 35px auto;
}
.four{
    margin: 35px auto;
    width: 80%;
    margin-bottom: 0;
}
.four img{
    float: left;
    width: 48%;
    margin-bottom: 25px;
    margin-right: 4%;
}
.four img:nth-child(2n){
    margin-right: 0;
}
.nine{
    width: 96%;
    margin: 35px auto;
    margin-top: 0;
}
.daili{
    width: 98%;
    margin: 15px auto;
}
.wangye{
    width: 96%;
    margin: 15px auto;
}
.thr{
    width: 88%;
    margin: 15px auto;
}
.bontome{
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    max-width: 600px;
    width: 100%;
}
.kefu{
    position: fixed;
    right: 0%;
    top: 37%;
    width: 20%;
    max-width: 146px;
}
.song{
    margin: 35px auto;
    width: 98%;
    margin-bottom: 0;
}
a{
    display: block;
}
#deviceInfo{
    display: none;
}