#maint-banner{
  position:fixed;top:0;left:0;right:0;z-index:2147483647;
  background:#e6a23c;color:#fff;padding:10px 16px;text-align:center;
  font-size:14px;line-height:1.5;box-shadow:0 2px 8px rgba(0,0,0,.25);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
}
#maint-banner b{font-size:16px;color:#fff;margin:0 2px;}
#maint-banner .close{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  cursor:pointer;font-size:18px;opacity:.8;padding:0 4px;
}
#maint-banner .close:hover{opacity:1;}