html, body {
    position: relative;
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

* {
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Source Han Sans CN", Helvetica, Tahoma, Arial, serif;
    font-weight: 200;
}

body {
    background: url("./img/0.jpg") center no-repeat;
    background-size: 100% 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.a {
    background: url("./img/10.png") center no-repeat;
    background-size: cover;
    width: 90%;
    padding-top: 110%;
    margin-top: 20%;
}
#ju{
    color: #aaa;
    margin-top: 10px;
    font-size: 13px;
}
#btn{
    padding:  5% 20px;
    background: linear-gradient(90deg,#4cd8ea,#45abfa);
    text-align: center;
    height: 5px;
    width: 80%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    letter-spacing: 2px;
    border-radius: 50px;
    margin: 20px auto;
    font-weight: bold;
}

.ss {
    flex: 1
}

.b {

}

.c {
    text-align: center;
    color: #cdcdcd;
    font-size: 13px;
    margin: 10px auto;
}
.o>div{
    position: absolute;
    right: 3%;
    top: 3%;
}
.o>div div{
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}
.hide{
    display: none;
}
.o i{
    margin-right: 3px;
    font-style: normal;
    width: 16px;
    height: 16px;
    font-size: 13px;
    background: #fff;
    border-radius: 50%;
   display: flex;
    align-items: center;
    color: #000;
    justify-content: center;
}
.o{
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    background: linear-gradient(rgba(0,0,0,.6),rgba(0,0,0,.4),rgba(0,0,0,.4));
    text-align: right;
    color: #fff;
}
.d{
    background: url("./img/2.png") center no-repeat;
    width: 72%;
    padding-top: 12%;
    background-size: cover;
}