#stage {
  position: fixed;
  top: 50%;
  left: 50%;
  height: 75%;
  width: 75%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}
#o {
  -webkit-animation: spin 5s infinite linear;
  -moz-animation: spin 5s infinite linear;
  -o-animation: spin 5s infinite linear;
  -ms-animation: spin 5s infinite linear;
  animation: spin 5s infinite linear;
  width: 100%;
  height: 100%;
}
@-moz-keyframes spin {
  100% {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@-webkit-keyframes spin {
  100% {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@-o-keyframes spin {
  100% {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes spin {
  100% {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}