body {
  background-image: url("https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwallpapercave.com%2Fwp%2Fwp10827576.jpg&f=1&nofb=1&ipt=e3222506779786e116d0cf91928778d430a5edcbfdb937857501976a3426c5e0");
  background-size: 100% 100%;
}

#maindiv {
}

#thebooth {
  width: 20%;
  margin: 25% auto 10% 10%;
}