.south-park-blink {
  display: inline-block;
  width: 0.5em;
  height: 1em;
  margin-bottom: -2pt;
  background-color: black;
  -webkit-animation: blink 1s linear infinite;
     -moz-animation: blink 1s linear infinite;
          animation: blink 1s linear infinite;
}

@-webkit-keyframes blink {
  0% {
    opacity: 0;
  }
  49% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}

@-moz-keyframes blink {
  0% {
    opacity: 0;
  }
  49% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}

@keyframes blink {
  0% {
    opacity: 0;
  }
  49% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}

code {
  font-family: monospace, 'Courier New', Courier, monospace;
  display: block;
  width: 100%;
  max-width: 480px;
  padding: 10px;
  border-radius: 3px;
}