/* 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(38px, 9999px, 18px, 0);
    transform: skew(0.38deg);
  }
  5% {
    clip: rect(4px, 9999px, 36px, 0);
    transform: skew(0.54deg);
  }
  10% {
    clip: rect(49px, 9999px, 22px, 0);
    transform: skew(0.66deg);
  }
  15% {
    clip: rect(97px, 9999px, 45px, 0);
    transform: skew(0.46deg);
  }
  20% {
    clip: rect(94px, 9999px, 95px, 0);
    transform: skew(0.46deg);
  }
  25% {
    clip: rect(92px, 9999px, 29px, 0);
    transform: skew(0.48deg);
  }
  30% {
    clip: rect(10px, 9999px, 60px, 0);
    transform: skew(0.43deg);
  }
  35% {
    clip: rect(14px, 9999px, 8px, 0);
    transform: skew(0.16deg);
  }
  40% {
    clip: rect(98px, 9999px, 34px, 0);
    transform: skew(0.49deg);
  }
  45% {
    clip: rect(73px, 9999px, 26px, 0);
    transform: skew(0.9deg);
  }
  50% {
    clip: rect(83px, 9999px, 93px, 0);
    transform: skew(0.63deg);
  }
  55% {
    clip: rect(36px, 9999px, 50px, 0);
    transform: skew(0.54deg);
  }
  60% {
    clip: rect(14px, 9999px, 100px, 0);
    transform: skew(1deg);
  }
  65% {
    clip: rect(86px, 9999px, 7px, 0);
    transform: skew(0.5deg);
  }
  70% {
    clip: rect(41px, 9999px, 26px, 0);
    transform: skew(0.31deg);
  }
  75% {
    clip: rect(58px, 9999px, 37px, 0);
    transform: skew(0.79deg);
  }
  80% {
    clip: rect(1px, 9999px, 33px, 0);
    transform: skew(0.15deg);
  }
  85% {
    clip: rect(63px, 9999px, 3px, 0);
    transform: skew(0.06deg);
  }
  90% {
    clip: rect(13px, 9999px, 50px, 0);
    transform: skew(0.13deg);
  }
  95% {
    clip: rect(96px, 9999px, 19px, 0);
    transform: skew(0.33deg);
  }
  100% {
    clip: rect(31px, 9999px, 21px, 0);
    transform: skew(0.46deg);
  }
}
@keyframes glitch-anim2 {
  0% {
    clip: rect(20px, 9999px, 30px, 0);
    transform: skew(0.32deg);
  }
  5% {
    clip: rect(31px, 9999px, 4px, 0);
    transform: skew(0.23deg);
  }
  10% {
    clip: rect(95px, 9999px, 44px, 0);
    transform: skew(0.91deg);
  }
  15% {
    clip: rect(39px, 9999px, 11px, 0);
    transform: skew(0.66deg);
  }
  20% {
    clip: rect(76px, 9999px, 53px, 0);
    transform: skew(0.1deg);
  }
  25% {
    clip: rect(78px, 9999px, 44px, 0);
    transform: skew(0.28deg);
  }
  30% {
    clip: rect(25px, 9999px, 12px, 0);
    transform: skew(0.28deg);
  }
  35% {
    clip: rect(23px, 9999px, 18px, 0);
    transform: skew(0.09deg);
  }
  40% {
    clip: rect(79px, 9999px, 65px, 0);
    transform: skew(0.58deg);
  }
  45% {
    clip: rect(94px, 9999px, 40px, 0);
    transform: skew(0.38deg);
  }
  50% {
    clip: rect(34px, 9999px, 45px, 0);
    transform: skew(0.02deg);
  }
  55% {
    clip: rect(7px, 9999px, 40px, 0);
    transform: skew(0.62deg);
  }
  60% {
    clip: rect(40px, 9999px, 85px, 0);
    transform: skew(0.82deg);
  }
  65% {
    clip: rect(79px, 9999px, 53px, 0);
    transform: skew(0.4deg);
  }
  70% {
    clip: rect(36px, 9999px, 71px, 0);
    transform: skew(0.56deg);
  }
  75% {
    clip: rect(11px, 9999px, 85px, 0);
    transform: skew(0.71deg);
  }
  80% {
    clip: rect(42px, 9999px, 24px, 0);
    transform: skew(0.17deg);
  }
  85% {
    clip: rect(60px, 9999px, 43px, 0);
    transform: skew(0.59deg);
  }
  90% {
    clip: rect(38px, 9999px, 54px, 0);
    transform: skew(0.13deg);
  }
  95% {
    clip: rect(90px, 9999px, 59px, 0);
    transform: skew(0.84deg);
  }
  100% {
    clip: rect(73px, 9999px, 38px, 0);
    transform: skew(0.88deg);
  }
}
@keyframes glitch-skew {
  0% {
    transform: skew(-2deg);
  }
  10% {
    transform: skew(0deg);
  }
  20% {
    transform: skew(2deg);
  }
  30% {
    transform: skew(5deg);
  }
  40% {
    transform: skew(4deg);
  }
  50% {
    transform: skew(0deg);
  }
  60% {
    transform: skew(0deg);
  }
  70% {
    transform: skew(4deg);
  }
  80% {
    transform: skew(-2deg);
  }
  90% {
    transform: skew(-3deg);
  }
  100% {
    transform: skew(3deg);
  }
}