.rotation {
  -webkit-animation: spin 0.4s ease-out;
  -moz-animation: spin 0.4s ease-out;
  -ms-animation: spin 0.4s ease-out;
  -o-animation: spin 0.4s ease-out;
  animation: spin 0.4s ease-out;
}

@-webkit-keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
  }
}
@-moz-keyframes spin {
  0% {
    -moz-transform: rotate(0deg);
  }
  100% {
    -moz-transform: rotate(360deg);
  }
}
@-ms-keyframes spin {
  0% {
    -ms-transform: rotate(0deg);
  }
  100% {
    -ms-transform: rotate(360deg);
  }
}
@-o-keyframes spin {
  0% {
    -o-transform: rotate(0deg);
  }
  100% {
    -o-transform: rotate(360deg);
  }
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes fade-in {
  0% {
    display: none;
    opacity: 0;
  }

  1% {
    display: block;
    opacity: 0;
  }

  100% {
    display: block;
    opacity: 1;
  }
}

@-moz-keyframes fade-in {
  0% {
    display: none;
    opacity: 0;
  }

  1% {
    display: block;
    opacity: 0;
  }

  100% {
    display: block;
    opacity: 1;
  }
}

@-webkit-keyframes fade-in {
  0% {
    display: none;
    opacity: 0;
  }

  1% {
    display: block;
    opacity: 0;
  }

  100% {
    display: block;
    opacity: 1;
  }
}

@keyframes fade-out {
  0% {
    display: none;
    opacity: 1;
  }

  1% {
    display: block;
    opacity: 1;
  }

  100% {
    display: block;
    opacity: 0;
  }
}

@-moz-keyframes fade-out {
  0% {
    display: none;
    opacity: 1;
  }

  1% {
    display: block;
    opacity: 1;
  }

  100% {
    display: block;
    opacity: 0;
  }
}

@-webkit-keyframes fade-out {
  0% {
    display: none;
    opacity: 1;
  }

  1% {
    display: block;
    opacity: 1;
  }

  100% {
    display: block;
    opacity: 0;
  }
}

.visible {
  display: block;
}
.invisible {
  display: block;
  opacity: 0;
  animation-duration: 0.5s;
  animation-name: fade-out;
  -moz-animation-duration: 0.5s;
  -moz-animation-name: fade-out;
  -webkit-animation-duration: 0.5s;
  -webkit-animation-name: fade-out;
}