#intro,
#the-place {
  width: 100vw;
  height: 100vh;
  top: 0;
  left: 0;
}
#intro,
body.not-compatible {
  color: #fff;
  font-family: sans-serif;
}
#intro.show,
body,
body.not-compatible {
  background-color: #000;
}
body {
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}
body.not-compatible {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
}
#error-message {
  text-align: center;
  display: none;
}
.not-compatible #error-message {
  display: initial;
}
#the-place {
  padding: 0;
  margin: auto;
  display: block;
  position: absolute;
  bottom: 0;
  right: 0;
}
#intro {
  position: fixed;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
#intro p {
  font-size: 2rem;
  line-height: 2rem;
  vertical-align: middle;
  animation: 1s linear infinite rotate;
}
#intro.show {
  display: flex;
}
#intro.hide {
  animation: 0.5s ease-out forwards disappear;
  overflow: hidden;
}
#intro.hide p {
  display: none;
}
@keyframes disappear {
  0% {
    background-color: #000;
  }
  99% {
    width: 100vw;
    height: 100vh;
  }
  100% {
    width: 0;
    height: 0;
    background-color: rgba(0, 0, 0, 0);
  }
}
@keyframes rotate {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(-360deg);
  }
}