* {
    padding: 0;
    margin: 0;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.container {
    height: 100%;
    width: 100%;
    position: relative;
}

.swiper {
    width: 100%;
    height: 100%;
    z-index: -1;
}


main {
    position: absolute;
    left: 50%;
    top: 30%;
    transform: translateX(-50%);
    z-index: 1;
}

footer {
    position: absolute;
    bottom: 0;
    z-index: 1;
    width: 100%;
    background: rgba(0, 0, 0, .2);
    text-align: center;
    padding: 10px 0;
}

nav {
    position: fixed;
    right: 0;
    top: 8%;
    width: 270px;
    height: 623px;
    background: #FF6868;
    z-index: 1;
    border-radius: 20px 0 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: #fff;
    font-size: 25px;
    padding-top: 35px;
}
nav div{
    margin-bottom: 25px;
}
nav div a{
    margin-bottom: 15px;
}
#qrcode{
    box-sizing: border-box;
    width: 150px;
    height: 150px;
}
#qrcode img {
    width: 130px;
    background-color: #fff;
    padding: 16px;
    border-radius: 10px;
}