.m-scene .scene-main {
  -webkit-animation-duration: 0.25s;
          animation-duration: 0.25s;
  -webkit-transition-timing-function: ease-in;
          transition-timing-function: ease-in;
  -webkit-animation-fill-mode: both;
          animation-fill-mode: both;
}
.m-scene .scene-main--fadein {
  -webkit-animation-name: fadeIn;
          animation-name: fadeIn;
}
.m-scene.is-exiting .scene-main {
  -webkit-animation-direction: alternate-reverse;
          animation-direction: alternate-reverse;
}

@-webkit-keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}