#app,body,html{height:100%;width:100%;margin:0;padding:0;font-family:Helvetica Neue,Helvetica,PingFang SC,Hiragino Sans GB,Arial,sans-serif;background:linear-gradient(180deg,#fff,#d0daeb);background-attachment:fixed;display:flex;justify-content:center;align-items:center}@media (prefers-color-scheme:dark){#app,body,html{background:none;background-color:#000;background-attachment:fixed}}