html,body{
    width: 100%;
    height: 100%;
    min-width: 1180px;
    padding: 0;
    margin: 0;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-image: url(../image/bg_img.png);
    display: flex;
    flex-direction: column;
    align-items: center;
}

#nav{
    width: 100%;
    height: 72px;
    background-color:rgba(255, 255, 255, 0.5);
    display: flex;
    position: fixed;
    flex-direction: row;
    flex-shrink: 0;
    align-items: center;
}

#nav ul{
    width: 100%;
    flex:right;
    margin-right: 240px;
}

li{
    width: 90px;
    height:34px;
    line-height: 34px;
    display:inline;
    font-weight: bolder;
    margin-left: 88px;
    float: right;
    text-align: center;
}
#nav ul li:hover{
    color: #000;
    background: #F9E133;
    border-radius: 12px;
}
#name{
    size: 16px;

}
#icon{
    width: 42px;
    height: 42px;
    margin-left: 220px;
}

.download_root{
width: 606px;
height: 450px;
margin-top: 120px;
background-color: white;
border-radius: 36px;
display: flex;
align-items: center;
flex-direction: row;
box-shadow: #000;
}
.download_left_wraper{
    display: flex;
    width: 313px;
    height: 450px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-top-left-radius:36px ;
    border-bottom-left-radius: 36px;
    background-color: #f1f3f9;
}
.download_right_wraper{
    display: flex;
    width: 293px;
    height: 450px;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    border-top-right-radius:36px ;
    border-bottom-right-radius: 36px;
    background-color: #fff;
    padding-top: 87px;
    box-sizing: border-box;
    padding-bottom: 87px;
}
.download_left_wraper .icon{
    width: 36px;
    height: 36px;
}
.download_left_wraper .title{
    margin-top: 27px;
    color: black;
    size: 24px;
    font-weight: bold;
}

.qr{
    width: 250px;
    height: 250px;
    margin-top: 34px;
}

.download_right_wraper .btn{
    width: 200px;
    height: 55px;
    margin-top: 10px;
}
.about_wraper{
    margin-top: 240px; 
}
.about_wraper .bg{
    width: 864px;
    height: 615px;
    display: flex;
    flex-direction: column;
   background-image:url(../image/about.png) ;
}

.abouttile{
    font-size:41px;
    font-family: PingFangSC-Semibold, PingFang SC;
}

.aboutdes{
    font-size:21px;
    left: 150px;
    top: 180px;
    font-family: PingFangSC-Semibold, PingFang SC;
  
}
.help{
    display: flex;
    flex-direction: column;
    width: 100%;
    align-items: center;
    background-color: #F1F3F9;
}
.help .bg{
    margin-top: 55px;
    width: 864px;
    height: 314px;
    background-image: url("../image/how.png");
}
.help .title{
    font-size:27px;
    font-family: PingFangSC-Semibold, PingFang SC;
}

.backup_wraper{
    width: 100%;
    display: flex;
    background-color: #FFF;
    justify-content: center;
}
.backup{
    width: 864px;
    height: 500px;
    padding-top: 80px;
    padding-bottom: 110px;
}

.import_account_wraper{
    width: 100%;
    display: flex;
    background-color: #F1F3F9;
    justify-content: center;
}
.import{
    width: 864px;
    height: 1354px;
    padding-top: 80px;
    padding-bottom: 110px;
}
.tofriend_wraper{
     width: 864px;
    height: 583px;
    padding-top: 20px;
    padding-bottom: 110px;
}
.footer{
    width: 100%;
    height: 179px;
    flex-shrink: 0;
    display: flex;
    background-color: #fff;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.footer_text{
    color: #000;
    size: 42px;
}
.footer_link{
    width: 123px;
    height: 123px;
    flex-shrink: 0;
    margin-left: 105px;
}