.glitch{
  color:white;
  font-size:85px;
  position:relative;
  width:400px;
  margin:0 auto;
}
@keyframes noise-anim {
  0% {
    clip: rect(71px, 9999px, 93px, 0);
  }
  5% {
    clip: rect(64px, 9999px, 73px, 0);
  }
  10% {
    clip: rect(55px, 9999px, 25px, 0);
  }
  15% {
    clip: rect(30px, 9999px, 9px, 0);
  }
  20% {
    clip: rect(88px, 9999px, 61px, 0);
  }
  25% {
    clip: rect(13px, 9999px, 24px, 0);
  }
  30% {
    clip: rect(69px, 9999px, 3px, 0);
  }
  35% {
    clip: rect(7px, 9999px, 23px, 0);
  }
  40% {
    clip: rect(79px, 9999px, 3px, 0);
  }
  45% {
    clip: rect(7px, 9999px, 92px, 0);
  }
  50% {
    clip: rect(22px, 9999px, 90px, 0);
  }
  55% {
    clip: rect(91px, 9999px, 28px, 0);
  }
  60% {
    clip: rect(37px, 9999px, 79px, 0);
  }
  65% {
    clip: rect(60px, 9999px, 71px, 0);
  }
  70% {
    clip: rect(7px, 9999px, 64px, 0);
  }
  75% {
    clip: rect(49px, 9999px, 4px, 0);
  }
  80% {
    clip: rect(77px, 9999px, 35px, 0);
  }
  85% {
    clip: rect(3px, 9999px, 30px, 0);
  }
  90% {
    clip: rect(25px, 9999px, 26px, 0);
  }
  95% {
    clip: rect(72px, 9999px, 95px, 0);
  }
  100% {
    clip: rect(84px, 9999px, 37px, 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(4px, 9999px, 63px, 0);
  }
  5% {
    clip: rect(41px, 9999px, 63px, 0);
  }
  10% {
    clip: rect(1px, 9999px, 11px, 0);
  }
  15% {
    clip: rect(96px, 9999px, 11px, 0);
  }
  20% {
    clip: rect(76px, 9999px, 59px, 0);
  }
  25% {
    clip: rect(98px, 9999px, 84px, 0);
  }
  30% {
    clip: rect(90px, 9999px, 28px, 0);
  }
  35% {
    clip: rect(28px, 9999px, 75px, 0);
  }
  40% {
    clip: rect(52px, 9999px, 17px, 0);
  }
  45% {
    clip: rect(44px, 9999px, 79px, 0);
  }
  50% {
    clip: rect(77px, 9999px, 93px, 0);
  }
  55% {
    clip: rect(50px, 9999px, 43px, 0);
  }
  60% {
    clip: rect(4px, 9999px, 58px, 0);
  }
  65% {
    clip: rect(1px, 9999px, 70px, 0);
  }
  70% {
    clip: rect(41px, 9999px, 42px, 0);
  }
  75% {
    clip: rect(98px, 9999px, 13px, 0);
  }
  80% {
    clip: rect(91px, 9999px, 12px, 0);
  }
  85% {
    clip: rect(48px, 9999px, 46px, 0);
  }
  90% {
    clip: rect(92px, 9999px, 83px, 0);
  }
  95% {
    clip: rect(74px, 9999px, 93px, 0);
  }
  100% {
    clip: rect(73px, 9999px, 72px, 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;
}