to prevent your code from going straight to production, include this

irony.css

.ironic {
  font-family: "Comic Sans MS", "Comic Sans", cursive;
  color: rebeccapurple;
  font-size: 26pt;
  text-shadow: black 0px 3px 18px;

  text-align: center;
  display: block;
  width: 100%;

  /* keep it in place */
  position: absolute;
  left: 0;
  transform: translateX(-50%);
}
@-ms-keyframes spin {
  from { -ms-transform: rotate(0deg); }
  to { -ms-transform: rotate(360deg); }
}
@-moz-keyframes spin {
  from { -moz-transform: rotate(0deg); }
  to { -moz-transform: rotate(360deg); }
}
@-webkit-keyframes spin {
  from { -webkit-transform: rotate(0deg); }
  to { -webkit-transform: rotate(360deg); }
}
@keyframes spin {
  from {
    transform:rotate(0deg);
  }
  to {
    transform:rotate(360deg);
  }
}
.spin {
  -webkit-animation-name: spin;
  -webkit-animation-duration: 4000ms;
  -webkit-animation-iteration-count: infinite;
  -webkit-animation-timing-function: linear;
  -moz-animation-name: spin;
  -moz-animation-duration: 4000ms;
  -moz-animation-iteration-count: infinite;
  -moz-animation-timing-function: linear;
  -ms-animation-name: spin;
  -ms-animation-duration: 4000ms;
  -ms-animation-iteration-count: infinite;
  -ms-animation-timing-function: linear;

  animation-name: spin;
  animation-duration: 4000ms;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}


@-webkit-keyframes blink {80%{opacity:0.0}}

.blink {
  -webkit-animation: blink 1s steps(1,end) 0s infinite;
}

.spin.blink {
  -webkit-animation: spin 4000ms infinite linear, blink 1s steps(1,end) 0s infinite;
}