Blink tags in css animation. by trinary

index.html

<html>
  <head>
    <style>
    h1 {
      -webkit-animation-name: blinker;
      -webkit-animation-duration: 2s;
      -webkit-animation-iteration-count: infinite;
      -webkit-animation-timing-function: steps(1,end);
    }

    @-webkit-keyframes blinker {
      from {
        opacity: 1;
      }
      50% {
        opacity: 0;
      }
      to {
        opacity: 1;
      }
    }
    </style>
  </head>
  <body>
    <h1>HEY I'M BLINKING</h1>
  </body>
</html>