html{font-size:10px;}
.dialog{top:40%;left:40%;padding:0.5rem 0.8rem;text-align:center;position:fixed;border-radius:0.5rem;font-size:1.6rem;color:#fff;background:rgba(0, 0, 0, 0.7);box-shadow:0 0.2rem 0.3rem #9b9b9b;z-index:9999;}