@-webkit-keyframes hinge {
  0% {
    -webkit-transform: rotate(0);
    -webkit-transform-origin: top left;
    -webkit-animation-timing-function: ease-in-out;
  }
  20%,
  60% {
    -webkit-transform: rotate(80deg);
    -webkit-transform-origin: top left;
    -webkit-animation-timing-function: ease-in-out;
  }
  40% {
    -webkit-transform: rotate(60deg);
    -webkit-transform-origin: top left;
    -webkit-animation-timing-function: ease-in-out;
  }
  80% {
    -webkit-transform: rotate(60deg) translateY(0);
    opacity: 1;
    -webkit-transform-origin: top left;
    -webkit-animation-timing-function: ease-in-out;
  }
  100% {
    -webkit-transform: translateY(700px);
    opacity: 0;
  }
}
@-moz-keyframes hinge {
  0% {
    -moz-transform: rotate(0);
    -moz-transform-origin: top left;
    -moz-animation-timing-function: ease-in-out;
  }
  20%,
  60% {
    -moz-transform: rotate(80deg);
    -moz-transform-origin: top left;
    -moz-animation-timing-function: ease-in-out;
  }
  40% {
    -moz-transform: rotate(60deg);
    -moz-transform-origin: top left;
    -moz-animation-timing-function: ease-in-out;
  }
  80% {
    -moz-transform: rotate(60deg) translateY(0);
    opacity: 1;
    -moz-transform-origin: top left;
    -moz-animation-timing-function: ease-in-out;
  }
  100% {
    -moz-transform: translateY(700px);
    opacity: 0;
  }
}
@-o-keyframes hinge {
  0% {
    -o-transform: rotate(0);
    -o-transform-origin: top left;
    -o-animation-timing-function: ease-in-out;
  }
  20%,
  60% {
    -o-transform: rotate(80deg);
    -o-transform-origin: top left;
    -o-animation-timing-function: ease-in-out;
  }
  40% {
    -o-transform: rotate(60deg);
    -o-transform-origin: top left;
    -o-animation-timing-function: ease-in-out;
  }
  80% {
    -o-transform: rotate(60deg) translateY(0);
    opacity: 1;
    -o-transform-origin: top left;
    -o-animation-timing-function: ease-in-out;
  }
  100% {
    -o-transform: translateY(700px);
    opacity: 0;
  }
}
@keyframes hinge {
  0% {
    transform: rotate(0);
    transform-origin: top left;
    animation-timing-function: ease-in-out;
  }
  20%,
  60% {
    transform: rotate(80deg);
    transform-origin: top left;
    animation-timing-function: ease-in-out;
  }
  40% {
    transform: rotate(60deg);
    transform-origin: top left;
    animation-timing-function: ease-in-out;
  }
  80% {
    transform: rotate(60deg) translateY(0);
    opacity: 1;
    transform-origin: top left;
    animation-timing-function: ease-in-out;
  }
  100% {
    transform: translateY(700px);
    opacity: 0;
  }
}
.hinge {
  -webkit-animation-name: hinge;
  -moz-animation-name: hinge;
  -o-animation-name: hinge;
  animation-name: hinge;
}