/* Our mixin positions a copy of our text
directly on our existing text, while
also setting content to the appropriate
text set in the data-text attribute. */
.glitch {
  position: relative;
  color: white;
  font-size: 4em;
  letter-spacing: 0.5em;
  /* Animation provies a slight random skew. Check bottom of doc
  for more information on how to random skew. */
  animation: glitch-skew 1s infinite linear alternate-reverse;
}
.glitch::before {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  left: 2px;
  text-shadow: -2px 0 #ff00c1;
  /* Creates an initial clip for our glitch. This works in
  a typical top,right,bottom,left fashion and creates a mask
  to only show a certain part of the glitch at a time. */
  clip: rect(44px, 450px, 56px, 0);
  /* Runs our glitch-anim defined below to run in a 5s loop, infinitely,
  with an alternating animation to keep things fresh. */
  animation: glitch-anim 5s infinite linear alternate-reverse;
}
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  left: -2px;
  text-shadow: -2px 0 #00fff9, 2px 2px #ff00c1;
  animation: glitch-anim2 1s infinite linear alternate-reverse;
}

/* Creates an animation with 20 steaps. For each step, it calculates 
a percentage for the specific step. It then generates a random clip
box to be used for the random glitch effect. Also adds a very subtle
skew to change the 'thickness' of the glitch.*/
@keyframes glitch-anim {
  0% {
    clip: rect(7px, 9999px, 84px, 0);
    transform: skew(0.49deg);
  }
  5% {
    clip: rect(78px, 9999px, 54px, 0);
    transform: skew(0.2deg);
  }
  10% {
    clip: rect(31px, 9999px, 69px, 0);
    transform: skew(0.49deg);
  }
  15% {
    clip: rect(42px, 9999px, 27px, 0);
    transform: skew(0.46deg);
  }
  20% {
    clip: rect(59px, 9999px, 43px, 0);
    transform: skew(0.87deg);
  }
  25% {
    clip: rect(8px, 9999px, 100px, 0);
    transform: skew(0.74deg);
  }
  30% {
    clip: rect(45px, 9999px, 98px, 0);
    transform: skew(0.4deg);
  }
  35% {
    clip: rect(24px, 9999px, 93px, 0);
    transform: skew(0.1deg);
  }
  40% {
    clip: rect(27px, 9999px, 89px, 0);
    transform: skew(0.83deg);
  }
  45% {
    clip: rect(36px, 9999px, 72px, 0);
    transform: skew(0.32deg);
  }
  50% {
    clip: rect(6px, 9999px, 98px, 0);
    transform: skew(0.94deg);
  }
  55% {
    clip: rect(51px, 9999px, 36px, 0);
    transform: skew(0.89deg);
  }
  60% {
    clip: rect(78px, 9999px, 15px, 0);
    transform: skew(0.69deg);
  }
  65% {
    clip: rect(36px, 9999px, 14px, 0);
    transform: skew(0.91deg);
  }
  70% {
    clip: rect(4px, 9999px, 18px, 0);
    transform: skew(0.7deg);
  }
  75% {
    clip: rect(2px, 9999px, 9px, 0);
    transform: skew(0.45deg);
  }
  80% {
    clip: rect(17px, 9999px, 32px, 0);
    transform: skew(0.39deg);
  }
  85% {
    clip: rect(29px, 9999px, 82px, 0);
    transform: skew(0.82deg);
  }
  90% {
    clip: rect(43px, 9999px, 51px, 0);
    transform: skew(0.54deg);
  }
  95% {
    clip: rect(12px, 9999px, 66px, 0);
    transform: skew(0.43deg);
  }
  100% {
    clip: rect(47px, 9999px, 86px, 0);
    transform: skew(0.96deg);
  }
}
@keyframes glitch-anim2 {
  0% {
    clip: rect(47px, 9999px, 79px, 0);
    transform: skew(0.97deg);
  }
  5% {
    clip: rect(43px, 9999px, 48px, 0);
    transform: skew(0.12deg);
  }
  10% {
    clip: rect(3px, 9999px, 79px, 0);
    transform: skew(0.28deg);
  }
  15% {
    clip: rect(16px, 9999px, 68px, 0);
    transform: skew(0.54deg);
  }
  20% {
    clip: rect(29px, 9999px, 60px, 0);
    transform: skew(0.71deg);
  }
  25% {
    clip: rect(40px, 9999px, 83px, 0);
    transform: skew(0.67deg);
  }
  30% {
    clip: rect(11px, 9999px, 92px, 0);
    transform: skew(0.12deg);
  }
  35% {
    clip: rect(12px, 9999px, 50px, 0);
    transform: skew(0.8deg);
  }
  40% {
    clip: rect(58px, 9999px, 2px, 0);
    transform: skew(0.31deg);
  }
  45% {
    clip: rect(29px, 9999px, 64px, 0);
    transform: skew(0.01deg);
  }
  50% {
    clip: rect(82px, 9999px, 91px, 0);
    transform: skew(0.07deg);
  }
  55% {
    clip: rect(61px, 9999px, 23px, 0);
    transform: skew(0.95deg);
  }
  60% {
    clip: rect(2px, 9999px, 20px, 0);
    transform: skew(0.86deg);
  }
  65% {
    clip: rect(30px, 9999px, 93px, 0);
    transform: skew(0.15deg);
  }
  70% {
    clip: rect(19px, 9999px, 70px, 0);
    transform: skew(0.96deg);
  }
  75% {
    clip: rect(79px, 9999px, 34px, 0);
    transform: skew(0.58deg);
  }
  80% {
    clip: rect(91px, 9999px, 63px, 0);
    transform: skew(0.95deg);
  }
  85% {
    clip: rect(11px, 9999px, 24px, 0);
    transform: skew(0.67deg);
  }
  90% {
    clip: rect(60px, 9999px, 13px, 0);
    transform: skew(0.58deg);
  }
  95% {
    clip: rect(56px, 9999px, 77px, 0);
    transform: skew(0.67deg);
  }
  100% {
    clip: rect(59px, 9999px, 30px, 0);
    transform: skew(0.17deg);
  }
}
@keyframes glitch-skew {
  0% {
    transform: skew(-3deg);
  }
  10% {
    transform: skew(-3deg);
  }
  20% {
    transform: skew(1deg);
  }
  30% {
    transform: skew(3deg);
  }
  40% {
    transform: skew(-2deg);
  }
  50% {
    transform: skew(4deg);
  }
  60% {
    transform: skew(5deg);
  }
  70% {
    transform: skew(1deg);
  }
  80% {
    transform: skew(-4deg);
  }
  90% {
    transform: skew(2deg);
  }
  100% {
    transform: skew(-1deg);
  }
}