.fade-in {
  margin-top: 25px;
  font-size: 21px;
  text-align: center;
  animation: fadein 1s;
  -moz-animation: fadein 1s; /* Firefox */
  -webkit-animation: fadein 1s; /* Safari and Chrome */
  -o-animation: fadein 1s; /* Opera */
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@-moz-keyframes fadein {
  /* Firefox */
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@-webkit-keyframes fadein {
  /* Safari and Chrome */
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@-o-keyframes fadein {
  /* Opera */
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}