reactjs/react-modal

.ReactModal__Overlay {
  -webkit-perspective: 600;
  perspective: 600;
  opacity: 0;
}

.ReactModal__Overlay--after-open {
  opacity: 1;
  transition: opacity 150ms ease-out;
}

.ReactModal__Content {
  -webkit-transform: scale(0.5) rotateX(-30deg);
  transform: scale(0.5) rotateX(-30deg);
}

.ReactModal__Content--after-open {
  -webkit-transform: scale(1) rotateX(0deg);
  transform: scale(1) rotateX(0deg);
  transition: all 150ms ease-in;
}

.ReactModal__Overlay--before-close {
  opacity: 0;
}

.ReactModal__Content--before-close {
  -webkit-transform: scale(0.5) rotateX(30deg);
  transform: scale(0.5) rotateX(30deg);
  transition: all 150ms ease-in;
}

.ReactModal__Body--open,
.ReactModal__Html--open {
  overflow: hidden;
}