<!-- extracted from  (and improved upon) http://www.theverge.com/a/anatomy-of-a-hack -->

<h2 class="glitch heading" data-text="CSS GLITCH">CSS GLITCH</h2>

.glitch {
  position: relative;
  display: inline-block;
  text-transform: uppercase;
}

.glitch:after {
  clip: rect(0, 9999px, 0, 0);
  content: attr(data-text);
  left: 0; /* Was 1px */
  overflow: hidden;
  position: absolute;
  text-shadow: -1px 0 #ab77a9;
  top: 0;
  -webkit-animation: noise-anim 2s infinite linear alternate-reverse;
  animation: noise-anim 2s infinite linear alternate-reverse;
}

.glitch:before {
  clip: rect(0, 9999px, 0, 0);
  content: attr(data-text);
  top: 0;
  left: 0;
  overflow: hidden;
  position: absolute;
  text-shadow: 2px 0 #05d003;
  -webkit-animation: noise-anim-2 3s infinite linear alternate-reverse;
  animation: noise-anim-2 3s infinite linear alternate-reverse;
}
.heading:before {
  transform: translateX(-1px);
  text-shadow: 1px 0 #a10897;
}
.heading:after {
  transform: translateX(1px);
  text-shadow: -1px 0 #05d003;
}

body {
  font-size: 5vw;
  white-space: nowrap;
  text-align: center;
}

@keyframes noise-anim {
  0% {
    clip: rect(21px, 9999px, 57px, 0);
  }
  5% {
    clip: rect(21px, 9999px, 80px, 0);
  }
  10% {
    clip: rect(55px, 9999px, 69px, 0);
  }
  15.0% {
    clip: rect(22px, 9999px, 55px, 0);
  }
  20% {
    clip: rect(38px, 9999px, 69px, 0);
  }
  25% {
    clip: rect(31px, 9999px, 84px, 0);
  }
  30.0% {
    clip: rect(15px, 9999px, 28px, 0);
  }
  35% {
    clip: rect(16px, 9999px, 100px, 0);
  }
  40% {
    clip: rect(25px, 9999px, 10px, 0);
  }
  45% {
    clip: rect(19px, 9999px, 19px, 0);
  }
  50% {
    clip: rect(71px, 9999px, 35px, 0);
  }
  55.0% {
    clip: rect(89px, 9999px, 21px, 0);
  }
  60.0% {
    clip: rect(20px, 9999px, 34px, 0);
  }
  65% {
    clip: rect(22px, 9999px, 61px, 0);
  }
  70% {
    clip: rect(65px, 9999px, 28px, 0);
  }
  75% {
    clip: rect(82px, 9999px, 47px, 0);
  }
  80% {
    clip: rect(64px, 9999px, 11px, 0);
  }
  85.0% {
    clip: rect(63px, 9999px, 28px, 0);
  }
  90% {
    clip: rect(60px, 9999px, 60px, 0);
  }
  95% {
    clip: rect(9px, 9999px, 90px, 0);
  }
  100% {
    clip: rect(40px, 9999px, 62px, 0);
  }
}
@-webkit-keyframes noise-anim {
  0% {
    clip: rect(21px, 9999px, 57px, 0);
  }
  5% {
    clip: rect(21px, 9999px, 80px, 0);
  }
  10% {
    clip: rect(55px, 9999px, 69px, 0);
  }
  15.0% {
    clip: rect(22px, 9999px, 55px, 0);
  }
  20% {
    clip: rect(38px, 9999px, 69px, 0);
  }
  25% {
    clip: rect(31px, 9999px, 84px, 0);
  }
  30.0% {
    clip: rect(15px, 9999px, 28px, 0);
  }
  35% {
    clip: rect(16px, 9999px, 100px, 0);
  }
  40% {
    clip: rect(25px, 9999px, 10px, 0);
  }
  45% {
    clip: rect(19px, 9999px, 19px, 0);
  }
  50% {
    clip: rect(71px, 9999px, 35px, 0);
  }
  55.0% {
    clip: rect(89px, 9999px, 21px, 0);
  }
  60.0% {
    clip: rect(20px, 9999px, 34px, 0);
  }
  65% {
    clip: rect(22px, 9999px, 61px, 0);
  }
  70% {
    clip: rect(65px, 9999px, 28px, 0);
  }
  75% {
    clip: rect(82px, 9999px, 47px, 0);
  }
  80% {
    clip: rect(64px, 9999px, 11px, 0);
  }
  85.0% {
    clip: rect(63px, 9999px, 28px, 0);
  }
  90% {
    clip: rect(60px, 9999px, 60px, 0);
  }
  95% {
    clip: rect(9px, 9999px, 90px, 0);
  }
  100% {
    clip: rect(40px, 9999px, 62px, 0);
  }
}

@keyframes noise-anim-2 {
  0% {
    clip: rect(77px, 9999px, 63px, 0);
  }
  5% {
    clip: rect(7px, 9999px, 6px, 0);
  }
  10% {
    clip: rect(82px, 9999px, 78px, 0);
  }
  15.0% {
    clip: rect(85px, 9999px, 25px, 0);
  }
  20% {
    clip: rect(93px, 9999px, 38px, 0);
  }
  25% {
    clip: rect(70px, 9999px, 96px, 0);
  }
  30.0% {
    clip: rect(41px, 9999px, 72px, 0);
  }
  35% {
    clip: rect(39px, 9999px, 65px, 0);
  }
  40% {
    clip: rect(36px, 9999px, 34px, 0);
  }
  45% {
    clip: rect(84px, 9999px, 96px, 0);
  }
  50% {
    clip: rect(99px, 9999px, 45px, 0);
  }
  55.0% {
    clip: rect(37px, 9999px, 73px, 0);
  }
  60.0% {
    clip: rect(63px, 9999px, 20px, 0);
  }
  65% {
    clip: rect(55px, 9999px, 44px, 0);
  }
  70% {
    clip: rect(58px, 9999px, 11px, 0);
  }
  75% {
    clip: rect(61px, 9999px, 82px, 0);
  }
  80% {
    clip: rect(60px, 9999px, 9px, 0);
  }
  85.0% {
    clip: rect(37px, 9999px, 69px, 0);
  }
  90% {
    clip: rect(32px, 9999px, 64px, 0);
  }
  95% {
    clip: rect(63px, 9999px, 16px, 0);
  }
  100% {
    clip: rect(47px, 9999px, 34px, 0);
  }
}
@-webkit-keyframes noise-anim-2 {
  0% {
    clip: rect(77px, 9999px, 63px, 0);
  }
  5% {
    clip: rect(7px, 9999px, 6px, 0);
  }
  10% {
    clip: rect(82px, 9999px, 78px, 0);
  }
  15.0% {
    clip: rect(85px, 9999px, 25px, 0);
  }
  20% {
    clip: rect(93px, 9999px, 38px, 0);
  }
  25% {
    clip: rect(70px, 9999px, 96px, 0);
  }
  30.0% {
    clip: rect(41px, 9999px, 72px, 0);
  }
  35% {
    clip: rect(39px, 9999px, 65px, 0);
  }
  40% {
    clip: rect(36px, 9999px, 34px, 0);
  }
  45% {
    clip: rect(84px, 9999px, 96px, 0);
  }
  50% {
    clip: rect(99px, 9999px, 45px, 0);
  }
  55.0% {
    clip: rect(37px, 9999px, 73px, 0);
  }
  60.0% {
    clip: rect(63px, 9999px, 20px, 0);
  }
  65% {
    clip: rect(55px, 9999px, 44px, 0);
  }
  70% {
    clip: rect(58px, 9999px, 11px, 0);
  }
  75% {
    clip: rect(61px, 9999px, 82px, 0);
  }
  80% {
    clip: rect(60px, 9999px, 9px, 0);
  }
  85.0% {
    clip: rect(37px, 9999px, 69px, 0);
  }
  90% {
    clip: rect(32px, 9999px, 64px, 0);
  }
  95% {
    clip: rect(63px, 9999px, 16px, 0);
  }
  100% {
    clip: rect(47px, 9999px, 34px, 0);
  }
}