#dialog{
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    z-index:1000;
    position: fixed;
    height: 100%!important;
    width: 100%!important;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
}
#qrcode_area{
    top: 50%;
    left: 50%;
    background-color: #fff;
    transform: translate(-50%,-50%);
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
#qrcode_area img{
    width: 90%;
    height: 90%;
}
#close_btn{
    font-size: 0.6666667rem;
    color: rgb(0,186,255);
    height: 10%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
}
#close_btn:hover{
    background: rgba(0, 186, 255, 0.2);
    -webkit-transition: all .5s;
    transition: all .5s;
}