.glitch {
  color: white;
  font-size: 100px;
  position: relative;
  width: 400px;
  margin: 0 auto;
}

@keyframes noise-anim {
  0% {
    clip: rect(78px, 9999px, 23px, 0);
  }
  5% {
    clip: rect(23px, 9999px, 97px, 0);
  }
  10% {
    clip: rect(97px, 9999px, 46px, 0);
  }
  15% {
    clip: rect(87px, 9999px, 92px, 0);
  }
  20% {
    clip: rect(68px, 9999px, 80px, 0);
  }
  25% {
    clip: rect(18px, 9999px, 64px, 0);
  }
  30% {
    clip: rect(64px, 9999px, 58px, 0);
  }
  35% {
    clip: rect(94px, 9999px, 11px, 0);
  }
  40% {
    clip: rect(19px, 9999px, 37px, 0);
  }
  45% {
    clip: rect(68px, 9999px, 34px, 0);
  }
  50% {
    clip: rect(56px, 9999px, 87px, 0);
  }
  55% {
    clip: rect(86px, 9999px, 47px, 0);
  }
  60% {
    clip: rect(32px, 9999px, 40px, 0);
  }
  65% {
    clip: rect(5px, 9999px, 44px, 0);
  }
  70% {
    clip: rect(62px, 9999px, 62px, 0);
  }
  75% {
    clip: rect(69px, 9999px, 83px, 0);
  }
  80% {
    clip: rect(74px, 9999px, 76px, 0);
  }
  85% {
    clip: rect(6px, 9999px, 23px, 0);
  }
  90% {
    clip: rect(12px, 9999px, 39px, 0);
  }
  95% {
    clip: rect(10px, 9999px, 22px, 0);
  }
  100% {
    clip: rect(100px, 9999px, 61px, 0);
  }
}
.glitch:after {
  content: attr(data-text);
  position: absolute;
  left: 2px;
  text-shadow: -1px 0 red;
  top: 0;
  color: white;
  background: black;
  overflow: hidden;
  clip: rect(0, 900px, 0, 0);
  animation: noise-anim 2s infinite linear alternate-reverse;
}

@keyframes noise-anim-2 {
  0% {
    clip: rect(30px, 9999px, 29px, 0);
  }
  5% {
    clip: rect(61px, 9999px, 52px, 0);
  }
  10% {
    clip: rect(96px, 9999px, 53px, 0);
  }
  15% {
    clip: rect(91px, 9999px, 6px, 0);
  }
  20% {
    clip: rect(42px, 9999px, 84px, 0);
  }
  25% {
    clip: rect(99px, 9999px, 6px, 0);
  }
  30% {
    clip: rect(78px, 9999px, 83px, 0);
  }
  35% {
    clip: rect(58px, 9999px, 49px, 0);
  }
  40% {
    clip: rect(45px, 9999px, 63px, 0);
  }
  45% {
    clip: rect(43px, 9999px, 48px, 0);
  }
  50% {
    clip: rect(26px, 9999px, 53px, 0);
  }
  55% {
    clip: rect(74px, 9999px, 5px, 0);
  }
  60% {
    clip: rect(13px, 9999px, 49px, 0);
  }
  65% {
    clip: rect(71px, 9999px, 57px, 0);
  }
  70% {
    clip: rect(83px, 9999px, 47px, 0);
  }
  75% {
    clip: rect(92px, 9999px, 88px, 0);
  }
  80% {
    clip: rect(87px, 9999px, 29px, 0);
  }
  85% {
    clip: rect(92px, 9999px, 42px, 0);
  }
  90% {
    clip: rect(95px, 9999px, 7px, 0);
  }
  95% {
    clip: rect(48px, 9999px, 74px, 0);
  }
  100% {
    clip: rect(82px, 9999px, 5px, 0);
  }
}
.glitch:before {
  content: attr(data-text);
  position: absolute;
  left: -2px;
  text-shadow: 1px 0 blue;
  top: 0;
  color: white;
  background: black;
  overflow: hidden;
  clip: rect(0, 900px, 0, 0);
  animation: noise-anim-2 3s infinite linear alternate-reverse;
}